期刊文献+
共找到24篇文章
< 1 2 >
每页显示 20 50 100
Simplified criteria for diagnosing superficial esophageal squamous neoplasms using Narrow Band Imaging magnifying endoscopy 被引量:10
1
作者 Akira Dobashi Kenichi Goda +7 位作者 Noboru Yoshimura Tomohiko R Ohya Masayuki Kato Kazuki Sumiyama Masato Matsushima Shinichi Hirooka Masahiro Ikegami Hisao Tajiri 《World Journal of Gastroenterology》 SCIE CAS 2016年第41期9196-9204,共9页
AIM To simplify the diagnostic criteria for superficial esophageal squamous cell carcinoma(SESCC) on Narrow Band Imaging combined with magnifying endoscopy(NBI-ME).METHODS This study was based on the post-hoc analysis... AIM To simplify the diagnostic criteria for superficial esophageal squamous cell carcinoma(SESCC) on Narrow Band Imaging combined with magnifying endoscopy(NBI-ME).METHODS This study was based on the post-hoc analysis of a randomized controlled trial. We performed NBI-ME for 147 patients with present or a history of squamous cell carcinoma in the head and neck, or esophagus between January 2009 and June 2011. Two expert endoscopistsdetected 89 lesions that were suspicious for SESCC lesions, which had been prospectively evaluated for the following 6 NBI-ME findings in real time: "intervascular background coloration"; "proliferation of intrapapillary capillary loops(IPCL)"; and "dilation", "tortuosity", "change in caliber", and "various shapes(VS)" of IPCLs(i.e., Inoue's tetrad criteria). The histologic examination of specimens was defined as the gold standard for diagnosis. A stepwise logistic regression analysis was used to identify candidates for the simplified criteria from among the 6 NBI-ME findings for diagnosing SESCCs. We evaluated diagnostic performance of the simplified criteria compared with that of Inoue's criteria.RESULTS Fifty-four lesions(65%) were histologically diagnosed as SESCCs and the others as low-grade intraepithelial neoplasia or inflammation. In the univariate analysis, proliferation, tortuosity, change in caliber, and VS were significantly associated with SESCC(P < 0.01). The combination of VS and proliferation was statistically extracted from the 6 NBI-ME findings by using the stepwise logistic regression model. We defined the combination of VS and proliferation as simplified dyad criteria for SESCC. The areas under the curve of the simplified dyad criteria and Inoue's tetrad criteria were 0.70 and 0.73, respectively. No significant difference was shown between them. The sensitivity, specificity, and accuracy of diagnosis for SESCC were 77.8%, 57.1%, 69.7% and 51.9%, 80.0%, 62.9% for the simplified dyad criteria and Inoue's tetrad criteria, respectively.CONCLUSION The combination of proliferation and VS may serve as simplified criteria for the diagnosis of SESCC using NBIME. 展开更多
关键词 Simplified criteria narrow band imaging Magnifying endoscopy Esophageal cancer Squamous cell carcinoma Endoscopic diagnosis Classification Superficial squamous cell carcinoma Stepwise logistic regression analysis
下载PDF
Two cases of adenocarcinoma occurring in sporadic fundic gland polyps observed by magnifying endoscopy with narrow band imaging 被引量:10
2
作者 Kazumi Togo Tetsuya Ueo +6 位作者 Hirotoshi Yonemasu Hideho Honda Tetsuya Ishida Hiroshi Tanabe Kenshi Yao Akinori Iwashita Kazunari Murakami 《World Journal of Gastroenterology》 SCIE CAS 2016年第40期9028-9034,共7页
Gastric fundic gland polyps(FGPs) are common nonadenomatous gastric polyps arising from normal fundic mucosa without Helicobacter pylori(H. pylori) infection. Although systemic FGPs associated with familial adenomatou... Gastric fundic gland polyps(FGPs) are common nonadenomatous gastric polyps arising from normal fundic mucosa without Helicobacter pylori(H. pylori) infection. Although systemic FGPs associated with familial adenomatous polyposis(FAP) often have dysplasia, there are few reports of dysplasia occurring in sporadic F G P s, e s p e c i a l l y w h e n d e t e c t e d b y m a g n i f y i n g endoscopy with narrow band imaging(ME-NBI). We experienced two cases of adenocarcinoma occurring in sporadic FGPs, and their ME-NBI findings were very useful for differentiating FGP with cancer from nondysplastic FGP. A 68-year-old man and a 63-year-old woman were referred to our institution for medical checkup. H. pylori was negative in both patients. Endoscopic examination revealed a small reddishpolypoid lesion on the anterior wall of the upper gastric body and several FGPs. ME-NBI showed an irregular microvascular architecture composed of closed loop- or open loop-type vascular components, plus an irregular microsurface structure composed of oval-type surface components which was different from that of FGPs. FAP was denied because of the absence of colon polyps and no familial history of FAP. Pathological diagnosis was adenocarcinoma occurring in sporadic FGP. 展开更多
关键词 Sporadic type ADENOCARCINOMA Magnifying endoscopy with narrow band imaging Adenocarcinoma without Helicobacter pylori infection Fundic gland polyp
下载PDF
Clinical relevance of fluorodeoxyglucose positron emission tomography/computed tomography and magnifying endoscopy with narrow band imaging in decision-making regarding the treatment strategy for esophageal squamous cell carcinoma 被引量:7
3
作者 Kazuhiro Toriyama Masahiro Tajika +14 位作者 Tsutomu Tanaka Makoto Ishihara Yutaka Hirayama Sachiyo Onishi Nobumasa Mizuno Takamichi Kuwahara Nozomi Okuno Shinpei Matsumoto Eiichi Sasaki Tetsuya Abe Yasushi Yatabe Kazuo Hara Keitaro Matsuo Tsuneo Tamaki Yasumasa Niwa 《World Journal of Gastroenterology》 SCIE CAS 2019年第46期6767-6780,共14页
BACKGROUND Recent advances in endoscopic technology,especially magnifying endoscopy with narrow band imaging(ME-NBI)enable us to detect superficial esophageal squamous cell carcinoma(ESCC),but determining the appropri... BACKGROUND Recent advances in endoscopic technology,especially magnifying endoscopy with narrow band imaging(ME-NBI)enable us to detect superficial esophageal squamous cell carcinoma(ESCC),but determining the appropriate method of resection,endoscopic resection(ER)vs surgical resection,is often challenging.Recently,several studies have reported that 18F-fluorodeoxyglucose positron emission tomography(FDG-PET)is a useful indicator for decision-making regarding treatment for superficial ESCC.Although,there are not enough reports on association between FDG-PET uptake and clinicopathological characteristics of superficial ESCC.And,there are not enough reports on evaluating the usefulness of combination of FDG-PET and ME-NBI for determining the treatment strategy for superficial ESCC.This study evaluated clinical relevance of FDG-PET and ME-NBI in decision-making regarding the treatment strategy for ESCC.AIM To investigate the association between FDG uptake and the clinicopathological characteristics of superficial ESCC and its usefulness of combination of FDG-PET and ME-NBI for determining the treatment strategy for superficial ESCC.METHODS A database of all patients with superficial ESCC who had undergone both MENBI and FDG-PET for pre-treatment staging at Aichi Cancer Center Hospital between January 2008 and November 2018 was retrospectively analyzed.FDG uptake was defined positive or negative whether the primary lesion was visualized or could be distinguished from the background,or not.The invasion depth of ESCC was classified according to the Japan Esophageal Society.Primary endpoint is to evaluate the association between FDG uptake and clinicopathological characteristics of superficial ESCC.Secondary endpoint is to investigate the efficacy of combination of FDG-PET and ME-NBI for determining the treatment strategy for superficial ESCC.RESULTS A total of 82 lesions in 82 patients were included.FDG-PET showed positive uptake in 29(35.4%)lesions.Univariate analysis showed that uptake of FDG-PET had significant correlations with circumferential extension(P=0.014),pathological depth of tumor invasion(P<0.001),infiltrative growth pattern(P<0.001),histological grade(P=0.002),vascular invasion(P=0.001),and lymphatic invasion(P<0.001).On multivariate analysis,only depth of tumor invasion was independently correlated with FDG-PET/computed tomography visibility(P=0.018).The sensitivity,specificity,positive predictive value(PPV),negative predictive value(NPV),and accuracy of Type B2 in ME-NBI for the invasion depth of T1a muscularis mucosae and T1b upper submucosal layer were 68.4%/79.4%/50.0%/89.3%/76.8%,respectively,and those of Type B3 for the depth of T1b middle and deeper submucosal layers(SM2 and SM3)were 46.7%/100%/100%/89.3%/90.2%,respectively.On the other hand,those of FDGPET for SM2 and SM3 were 93.3%/77.6%/48.2%/98.1%/80.5%,respectively,whereas,if the combination of positive FDG uptake and type B2 and B3 was defined as an indicator for radical esophagectomy or definitive chemoradiotherapy,the sensitivity,specificity,PPV,NPV,and accuracy were 78.3%/91.5%/78.3%/91.5%/87.8%,respectively.CONCLUSION FDG uptake was correlated with the invasion depth of superficial ESCC.Combined use of FDG-PET and ME-NBI,especially with the microvascular findings of Type B2 and B3,is useful to determine whether ER is indicated for the lesion. 展开更多
关键词 ^18F-fluorodeoxyglucose positron emission tomography Magnifying endoscopy narrow band imaging Superficial esophageal cancer Squamous cell carcinoma Treatment strategy
下载PDF
Multicenter randomised controlled trial comparing the high definition white light endoscopy and the bright narrow band imaging for colon polyps 被引量:2
4
作者 Rajvinder Singh Kuan Loong Cheong +10 位作者 Leonardo Zorron Cheng Tao Pu Dileep Mangira Doreen Siew Ching Koay Carmen Kee Siew Chien Ng Rungsun Rerknimitr Satimai Aniwan Tiing-Leong Ang Khean-Lee Goh Shiaw Hooi Ho James Yun-Wong Lau 《World Journal of Gastrointestinal Endoscopy》 CAS 2017年第6期273-281,共9页
AIM To compare high definition white light endoscopy and bright narrow band imaging for colon polyps' detection rates. METHODS Patients were randomised to high definition white light endoscopy(HD-WLE) or the brigh... AIM To compare high definition white light endoscopy and bright narrow band imaging for colon polyps' detection rates. METHODS Patients were randomised to high definition white light endoscopy(HD-WLE) or the bright narrow band imaging(b NBI) during withdrawal of the colonoscope. Polyps identified in either mode were characterised using b NBI with dual focus(b NBI-DF) according to the Sano's classification. The primary outcome was to compare adenoma detection rates(ADRs) between the two arms. The secondary outcome was to assess the negative predictive value(NPV) in differentiating adenomas from hyperplastic polyps for diminutive rectosigmoid lesions.RESULTS A total of 1006 patients were randomised to HD-WLE(n = 511) or b NBI(n = 495). The mean of adenoma per patient was 1.62 and 1.84, respectively. The ADRs in b NBI and HD-WLE group were 37.4% and 39.3%, respectively. When adjusted for withdrawal time(OR = 1.19, 95%CI: 1.15-1.24, P < 0.001), the use of b NBI was associated with a reduced ADR(OR = 0.69, 95%CI: 0.52-0.92). Nine hundred and thirty three polyps(86%) in both arms were predicted with high confidence. The sensitivity(Sn), specificity(Sp), positive predictive value and NPV in differentiating adenomatous from non-adenomatous polyps of all sizes were 95.9%, 87.2%, 94.0% and 91.1% respectively. The NPV in differentiating an adenoma from hyperplastic polyp using b NBI-DF for diminutive rectal polyps was 91.0%.CONCLUSION ADRs did not differ between b NBI and HD-WLE, however HD-WLE had higher ADR after adjustment of withdrawal time. b NBI surpassed the PIVI threshold for diminutive polyps. 展开更多
关键词 narrow band imaging Dual focus High definition White light endoscopy COLON POLYPS Randomised controlled trial
下载PDF
Narrow band imaging for bladder cancer 被引量:2
5
作者 Thomas Y.Hsueh Allen W.Chiu 《Asian Journal of Urology》 2016年第3期126-129,共4页
Narrow band imaging(NBI)is a newly developed technology aiming to provide additional endoscopic information for patients with bladder cancer.This review focuses on the diagnostic accuracy and treatment outcome using N... Narrow band imaging(NBI)is a newly developed technology aiming to provide additional endoscopic information for patients with bladder cancer.This review focuses on the diagnostic accuracy and treatment outcome using NBI cystoscopy for the treatment of nonmuscle invasive bladder cancer.Current results showed improved sensitivity of NBI cystoscopy compared to conventional white light cystoscopy,although lower specificity and increased false-positive results were reported using NBI cystoscopy.The treatment outcome using NBI technology in transurethral resection of bladder tumor had a positive impact while decreased number of residual tumors and tumor recurrence at follow-up were reported.In the future,the application of NBI technology might refine the treatment and follow-up protocol in patients with non-muscle invasive bladder cancer.However,this large scale prospective studies are required to confirm the real cost-effectiveness of this new technology. 展开更多
关键词 Non-muscle invasive bladder cancer narrow band imaging DIAGNOSIS TREATMENT
下载PDF
Brown slits for colorectal adenoma crypts on conventional magnifying endoscopy with narrow band imaging using the X1 system 被引量:1
6
作者 Osamu Toyoshima Toshihiro Nishizawa +8 位作者 Shuntaro Yoshida Hidenobu Watanabe Nariaki Odawara Kosuke Sakitani Toru Arano Hirotoshi Takiyama Hideyuki Kobayashi Hirofumi Kogure Mitsuhiro Fujishiro 《World Journal of Gastroenterology》 SCIE CAS 2022年第24期2748-2757,共10页
BACKGROUND Accurate diagnosis of colorectal premalignant polyps,including adenomas,is vital in clinical practice.AIM To investigate the diagnostic yields of novel findings of brown slits for adenomas.METHODS Patients ... BACKGROUND Accurate diagnosis of colorectal premalignant polyps,including adenomas,is vital in clinical practice.AIM To investigate the diagnostic yields of novel findings of brown slits for adenomas.METHODS Patients who underwent colonoscopy at the Toyoshima Endoscopy Clinic were enrolled.Polyps sized≥5 mm suspected of adenomas or clinically significant serrated polyps were included in the study.We defined the surface structures of colorectal polyps,which were brown curves inside and along the tubular glands identified using a combination of a new X1 system(Olympus Corporation)and a conventional magnifying colonoscope with non-staining narrow band imaging(NBI),as brown slits.The brown slits corresponded to slit-like lumens on endocytoscopy and histological crypt openings of an adenoma.We evaluated the diagnostic performance of brown slits for adenoma.RESULTS A total of 108 Lesions from 62 patients were eligible.The average age was 60.4 years and 41.9%were male.The mean polyp size was 7.45±2.83 mm.Fifty-seven lesions were positive for brown slits.Histopathological diagnosis comprised 59 low-grade tubular adenomas,16 sessile serrated lesions,and 33 hyperplastic polyps.Among 59 adenomas,56(94.9%)were positive for brown slits.Among 16 sessile serrated lesions,0(0%)was positive for brown slits.Among 33 hyperplastic polyps,1(3.0%)was positive for brown slits.The sensitivity,specificity,and accuracy of brown slits for adenoma were 94.9%,98.0%,and 96.3%,respectively.The positive predictive value and negative predictive value of brown slits for adenoma were also excellent for 98.2%,and 94.1%,respectively.CONCLUSION Brown slits on conventional magnifying endoscopy with non-staining NBI using the X1 system were useful for diagnosing colorectal adenoma.The new endoscopy system could be examined using new standards. 展开更多
关键词 ADENOMA COLONOSCOPY narrow band imaging Magnifying endoscopy X1 Serrated polyp Colorectal neoplasm ENDOCYTOSCOPY
下载PDF
A Comprehensive Study on the digestive Endoscopic Technique and Narrow-Band Imaging for Early Gastric Cancer Screening
7
作者 Jing Ma 《Proceedings of Anticancer Research》 2024年第1期99-104,共6页
Objective:To explore the implementation of gastrointestinal endoscopy technology and endoscopic narrow-band imaging(NBI)in the early screening of gastric cancer and to observe and study their application effects.Metho... Objective:To explore the implementation of gastrointestinal endoscopy technology and endoscopic narrow-band imaging(NBI)in the early screening of gastric cancer and to observe and study their application effects.Methods:During the period from March 2023 to August 2023,312 patients who received gastroscopy in the Kunming Guandu District People’s Hospital were selected,and they underwent both conventional gastroscopy and endoscopic NBI,with clinicopathological tissue biopsy serving as the gold standard.The application value for early screening of gastric cancer was observed and analyzed.Results:The scoring data showed that the clarity of gastric mucosal glandular tube structure,microvascular structure clarity,and lesion contour scoring data of conventional gastroscopy were lower than those of the NBI technology(P<0.05).The screening rate of pathological biopsy in 312 patients was 18.59%(58 cases).Conventional gastroscopy showed a screening rate of 11.53%(36 cases),while NBI technology examined a screening rate of 17.63%(55 cases),and the two-by-two comparison of the screening rate data of the three groups was not statistically significant(P>0.05).The sensitivity,specificity,accuracy,positive predictive value,and negative predictive value of conventional gastroscopy appeared to be lower than those of NBI technology(P<0.05).Conclusion:In the early screening of gastric cancer,endoscopic NBI technology can be applied to patients.Compared with conventional gastroscopy,it provides a clearer visualization of the structure of the gastric mucosal glandular structure and microvascular structure,with a certain screening rate.Additionally,its sensitivity,specificity,accuracy,positive predictive value,and negative predictive value are higher,demonstrating outstanding effectiveness. 展开更多
关键词 Gastric cancer Early screening Gastrointestinal endoscopy technology Endoscopic narrow band imaging technology Application effect
下载PDF
Role of magnifying narrow-band imaging endoscopy for diagnosis of Helicobacter pylori infection and gastric precancerous conditions:Few issues
8
作者 Saroj Kanta Sahu Ayaskanta Singh 《World Journal of Gastroenterology》 SCIE CAS 2022年第15期1601-1603,共3页
Standard endoscopy with biopsy and narrow-band imaging with guided biopsy are techniques for the detection of Helicobacter pylori(H.pylori)-related gastritis and precancerous lesions.In this study,the authors compared... Standard endoscopy with biopsy and narrow-band imaging with guided biopsy are techniques for the detection of Helicobacter pylori(H.pylori)-related gastritis and precancerous lesions.In this study,the authors compared standard endoscopy and magnified narrow-band imaging(commonly known as NBI-M)in the diagnosis of H.pylori infections,atrophic gastritis,and intestinal metaplasia.Although the sensitivity of NBI-M is better than standard endoscopy,the diagnostic accuracy did not differ substantially between the diagnostic modalities.Future prospective studies may guide endoscopists in difficult cases regarding which modality is more useful and cost-effective for the diagnosis of H.pylorirelated gastritis and precancerous conditions. 展开更多
关键词 Standard endoscopy Magnified narrow band imaging Helicobacter pylori Atrophic gastritis Intestinal metaplasia PEPSINOGEN
下载PDF
Confocal laser endomicroscopy for gastric neoplasm
9
作者 Arkadeep Dhali Rick Maity +1 位作者 Roger B Rathna Jyotirmoy Biswas 《World Journal of Gastrointestinal Endoscopy》 2024年第9期540-544,共5页
Confocal laser endomicroscopy(CLE)is a novel endoscopic modality that provides real-time histological information via high-resolution magnified view of the mucosa.CLE has a higher sensitivity,specificity,and diagnosti... Confocal laser endomicroscopy(CLE)is a novel endoscopic modality that provides real-time histological information via high-resolution magnified view of the mucosa.CLE has a higher sensitivity,specificity,and diagnostic accuracy in detecting atrophic gastritis as compared to chromoendoscopy and narrow-band imaging.It can even predict low-grade and high-grade intraepithelial neoplasia by analyzing gastric pit patterns.CLE may have some advantages over the standard biopsy protocol,such as higher diagnostic yield and fewer biopsy requirements.Its diagnostic accuracy in detecting superficial gastric cancer is higher than that of white-light endoscopy.Inherent limitations,such as a narrow field of vision,can be surpassed by technological advancements and integration with other detection methods.Artificial intelligence holds promise in automated analysis of histopathological images.Thus,CLE can be helpful in screening for early gastric cancer and may help reduce the risk of complications from repeated biopsies,such as mucosal damage,bleeding,and infection. 展开更多
关键词 Confocal laser endomicroscopy Gastric cancer narrow band imaging Diagnostic yield
下载PDF
Autofluorescence imaging and magnification endoscopy 被引量:5
10
作者 Monalisa Filip Sevastita Iordache +1 位作者 Adrian Sǎftoiu Tudorel Ciurea 《World Journal of Gastroenterology》 SCIE CAS CSCD 2011年第1期9-14,共6页
It is well known that angiogenesis is critical in the transition from premalignant to malignant lesions.Consequently,early detection and diagnosis based on morphological changes to the microvessels are crucial.In the ... It is well known that angiogenesis is critical in the transition from premalignant to malignant lesions.Consequently,early detection and diagnosis based on morphological changes to the microvessels are crucial.In the last few years,new imaging techniques which utilize the properties of light-tissue interaction have been developed to increase early diagnosis of gastrointestinal(GI) tract neoplasia.We analyzed several "red-flag" endoscopic techniques used to enhance visualization of the vascular pattern of preneoplastic and neoplastic lesions(e.g.trimodal imaging including autofluorescence imaging,magnifying endoscopy and narrow band imaging).These new endoscopic techniques provide better visualization of mucosal microsurface structure and microvascular architecture and may enhance the diagnosis and characterization of mucosal lesions in the GI tract.In the near future,it is expected that trimodal imaging endoscopy will be practiced as a standard endoscopy technique as it is quick,safe and accurate for making a precise diagnosis of gastrointestinal pathology,with an emphasis on the diagnosis of early GI tract cancers.Further large-scale randomized controlled trials comparing these modalities in different patient subpopulations are warranted before their endorsement in the routine practice of GI endoscopy. 展开更多
关键词 ANGIOGENESIS Autofluorescence imaging Multiband imaging narrow band imaging Zoom endoscopy
下载PDF
Advanced endoscopic imaging in Barrett's oesophagus:A review on current practice 被引量:4
11
作者 Rajvinder Singh SweeLin Chen Yi Mei Sandeep Sethi 《World Journal of Gastroenterology》 SCIE CAS CSCD 2011年第38期4271-4276,共6页
Over the last few years,improvements in endoscopic imaging technology have enabled identification of dysplasia and early cancer in Barrett's oesophagus.New techniques should exhibit high sensitivities and specific... Over the last few years,improvements in endoscopic imaging technology have enabled identification of dysplasia and early cancer in Barrett's oesophagus.New techniques should exhibit high sensitivities and specificities and have good interobserver agreement.They should also be affordable and easily applicable to the community gastroenterologist.Ideally,these modalities must exhibit the capability of imaging wide areas in real time whilst enabling the endoscopist to specifically target abnormal areas.This review will specifically focus on some of the novel endoscopic imaging modalities currently available in routine practice which includes chromoendoscopy,autofluorescence imaging and narrow band imaging. 展开更多
关键词 Autofluorescence imaging Barrett's oesoph-agus CHROMOENDOSCOPY High magnifcation endoscopy narrow band imaging
下载PDF
Endoscopic imaging of Barrett's esophagus 被引量:3
12
作者 Mariam Naveed Kerry B Dunbar 《World Journal of Gastrointestinal Endoscopy》 CAS 2016年第5期259-266,共8页
The incidence of esophageal adenocarcinoma (EAC) has dramatically increased in the United States as well as Western European countries. The majority of esophageal adenocarcinomas arise from a backdrop of Barrett&r... The incidence of esophageal adenocarcinoma (EAC) has dramatically increased in the United States as well as Western European countries. The majority of esophageal adenocarcinomas arise from a backdrop of Barrett&rsquo;s esophagus (BE), a premalignant lesion that can lead to dysplasia and cancer. Because of the increased risk of EAC, GI society guidelines recommend endoscopic surveillance of patients with BE. The emphasis on early detection of dysplasia in BE through surveillance endoscopy has led to the development of advanced endoscopic imaging technologies. These techniques have the potential to both improve mucosal visualization and characterization and to detect small mucosal abnormalities which are difficult to identify with standard endoscopy. This review summarizes the advanced imaging technologies used in evaluation of BE. 展开更多
关键词 Esophageal adenocarcinoma Barrett&rsquo s esophagus DYSPLASIA Intestinal metaplasia Advanced endoscopic imaging narrow band imaging Confocal laser endomicroscopy
下载PDF
Texture and color enhancement imaging in magnifying endoscopic evaluation of colorectal adenomas 被引量:3
13
作者 Osamu Toyoshima Toshihiro Nishizawa +7 位作者 Shuntaro Yoshida Tomoharu Yamada Nariaki Odawara Tatsuya Matsuno Miho Obata Ken Kurokawa Chie Uekura Mitsuhiro Fujishiro 《World Journal of Gastrointestinal Endoscopy》 2022年第2期96-105,共10页
BACKGROUND Olympus Corporation has developed texture and color enhancement imaging(TXI)as a novel image-enhancing endoscopic technique.AIM To investigate the effectiveness of TXI in identifying colorectal adenomas usi... BACKGROUND Olympus Corporation has developed texture and color enhancement imaging(TXI)as a novel image-enhancing endoscopic technique.AIM To investigate the effectiveness of TXI in identifying colorectal adenomas using magnifying observation.METHODS Colorectal adenomas were observed by magnified endoscopy using white light imaging(WLI),TXI,narrow band imaging(NBI),and chromoendoscopy(CE).This study adopted mode 1 of TXI.Adenomas were confirmed by histological examination.TXI visibility was compared with the visibility of WLI,NBI,and CE for tumor margin,and vessel and surface patterns of the Japan NBI expert team(JNET)classification.Three expert endoscopists and three non-expert endoscopists evaluated the visibility scores,which were classified as 1,2,3,and 4.RESULTS Sixty-one consecutive adenomas were evaluated.The visibility score for tumor margin of TXI(3.47±0.79)was significantly higher than that of WLI(2.86±1.02,P<0.001),but lower than that of NBI(3.76±0.52,P<0.001),regardless of the endoscopist’s expertise.TXI(3.05±0.79)had a higher visibility score for the vessel pattern of JNET classification than WLI(2.17±0.90,P<0.001)and CE(2.47±0.87,P<0.001),but lower visibility score than NBI(3.79±0.47,P<0.001),regardless of the experience of endoscopists.For the visibility score for the surface pattern of JNET classification,TXI(2.89±0.85)was superior to WLI(1.95±0.79,P<0.01)and CE(2.75±0.90,P=0.002),but inferior to NBI(3.67±0.55,P<0.001).CONCLUSION TXI provided higher visibility than WLI,lower than NBI,and comparable to or higher than CE in the magnified observation of colorectal adenomas. 展开更多
关键词 Texture and color enhancement imaging ADENOMA Colonoscopy narrow band imaging Japan NBI Expert Team OLYMPUS
下载PDF
Texture and color enhancement imaging for detecting colorectal adenomas: Good, but not good enough 被引量:2
14
作者 Ying Wang Chen-Yu Sun +2 位作者 Lowe Scott Dan-Dan Wu Xia Chen 《World Journal of Gastrointestinal Endoscopy》 2022年第7期471-473,共3页
Texture and color enhancement imaging(TXI)has been developed as a novel image-enhancing endoscopy.However,the effectiveness of TXI detecting adenomas is inferior to narrow band imaging.Thus,future studies will need to... Texture and color enhancement imaging(TXI)has been developed as a novel image-enhancing endoscopy.However,the effectiveness of TXI detecting adenomas is inferior to narrow band imaging.Thus,future studies will need to focus on investigating the feasibility of such combination in clinical settings in order to provide patients with more accurate diagnoses. 展开更多
关键词 White light imaging Texture and color enhancement imaging narrow band imaging Colorectal adenomas
下载PDF
Clinical impact of surveillance for head and neck cancer in patients with esophageal squamous cell carcinoma 被引量:13
15
作者 Hiroyuki Morimoto Tomonori Yano +5 位作者 Yusuke Yoda Yasuhiro Oono Hiroaki Ikematsu Ryuichi Hayashi Atsushi Ohtsu Kazuhiro Kaneko 《World Journal of Gastroenterology》 SCIE CAS 2017年第6期1051-1058,共8页
To evaluate the clinical impact of surveillance for head and neck (HN) region with narrow band imaging (NBI) in patients with esophageal squamous cell carcinoma (ESCC).METHODSSince 2006, we introduced the surveillance... To evaluate the clinical impact of surveillance for head and neck (HN) region with narrow band imaging (NBI) in patients with esophageal squamous cell carcinoma (ESCC).METHODSSince 2006, we introduced the surveillance for HN region using NBI for all patients with ESCC before treatment, and each follow-up. The patients with newly diagnosed stage I to III ESCC were enrolled and classified into two groups as follows: Group A (no surveillance for HN region); between 1992 and 2000), and Group B (surveillance for HN region with NBI; between 2006 and 2008). We comparatively evaluated the detection rate of superficial head and neck squamous cell carcinoma (HNSCC), and the serious events due to metachronous advanced HNSCC during the follow-up.RESULTSA total 561 patients (group A: 254, group B: 307) were enrolled. Synchronous superficial HNSCC was detected in 1 patient (0.3%) in group A, and in 12 (3.9%) in group B (P = 0.008). During the follow up period, metachronous HNSCC were detected in 10 patients (3.9%) in group A and in 30 patients (9.8%) in group B (P = 0.008). All metachronous lesions in group B were early stage, and 26 patients underwent local resection, however, 6 of 10 patients (60%) in group A lost their laryngeal function and died with metachronous HNSCC.CONCLUSIONSurveillance for the HN region by using NBI endoscopy increase the detection rate of early HNSCC in patients with ESCC, and led to decrease serious events related to advanced metachronous HNSCC. 展开更多
关键词 esophageal squamous cell carcinoma head and neck squamous cell carcinoma narrow band imaging endoscopic resection SURVEILLANCE metachronous cancer
下载PDF
New endoscopic approaches in IBD 被引量:6
16
作者 Helmut Neumann Markus F Neurath Jonas Mudter 《World Journal of Gastroenterology》 SCIE CAS CSCD 2011年第1期63-68,共6页
Recent advances in endoscopic imaging techniques have revolutionized the diagnostic approach of patients with inflammatory bowel disease(IBD).New,emerging endoscopic imaging techniques visualized a plethora of new muc... Recent advances in endoscopic imaging techniques have revolutionized the diagnostic approach of patients with inflammatory bowel disease(IBD).New,emerging endoscopic imaging techniques visualized a plethora of new mucosal details even at the cellular and subcellular level.This review offers an overview about new endoscopic techniques,including chromoendoscopy,magnification endoscopy,spectroscopy,confocal laser endomicroscopy and endocytoscopy in the face of IBD. 展开更多
关键词 ENDOSCOPY Inflammatory bowel disease ENDOMICROSCOPY ENDOCYTOSCOPY narrow band imaging Fujinon intelligent color enhancement i-Scan Spectroscopy CHROMOENDOSCOPY Ulcerative colitis Crohn's disease Fluorescence endoscopy
下载PDF
Cancer risk in IBD: How to diagnose and how to manage DALM and ALM 被引量:6
17
作者 Helmut Neumann Michael Vieth +2 位作者 Cord Langner Markus F Neurath Jonas Mudter 《World Journal of Gastroenterology》 SCIE CAS CSCD 2011年第27期3184-3191,共8页
The risk of developing neoplasia leading to colorectal cancer is significantly increased in ulcerative colitis (UC) and most likely in Crohn's disease. Several endoscopic surveillance strategies have been implemen... The risk of developing neoplasia leading to colorectal cancer is significantly increased in ulcerative colitis (UC) and most likely in Crohn's disease. Several endoscopic surveillance strategies have been implemented to identify these lesions. The main issue is that colitisassociated neoplasms often occurs in flat mucosa, often being detected on taking random biopsies rather than by identification of these lesions via endoscopic imaging. The standard diagnostic procedure in long lasting UC is to take four biopsies every 10 cm. Image enhancement methods, such as chromoendoscopy and virtual histology using endomicroscopy, have greatly im- proved neoplasia detection rates and may contribute toreduced random biopsies by taking targeted "smart" biopsies. Chromoendoscopy may effectively be performed by experienced endoscopists for routine screening of UC patients. By contrast, endomicroscopy is often only available in selected specialized endoscopic centers. Importantly, advanced endoscopic imaging has the poten- tial to increase the detection rate of neoplasia whereas the interplay between endoscopic experience and interpretation of histological biopsy evaluation allows the physician to make a proper diagnosis and to find the appropriate therapeutic approach. Colitis-associated intraepithelial neoplasms may occur in flat mucosa of endoscopically normal appearance or may arise as dysplasia-associated lesion or mass (DALM), which may be indistinguishable from sporadic adenomas in healthy or non-colitis mucosa [adenoma-like mass (ALM)]. The aim of this review was to summarize endoscopic and histological characteristics of DALM and ALM in the context of therapeutic procedures. 展开更多
关键词 Inflammatory bowel disease Crohn’s dis- ease Endoscopy Colitis Dysplasia-associated lesion or mass Adenoma-like mass ENDOMICROSCOPY Ulcerative colitis ENDOMICROSCOPY Confocal laser endomicroscopy Probe-based confocal laser endomicroscopy Integrated confocal laser endomicroscopy Endoscope-based confocal laser endomicroscopy narrow band imaging CHROMOENDOSCOPY Cancer DYSPLASIA
下载PDF
Endoscopic features of early-stage signet-ring-cell carcinoma of the stomach 被引量:8
18
作者 Chainarong Phalanusitthepha Kevin L Grimes +4 位作者 Haruo Ikeda Hiroki Sato Chiaki Sato Chananya Hokierti Haruhiro Inoue 《World Journal of Gastrointestinal Endoscopy》 CAS 2015年第7期741-746,共6页
AIM: To identify the features of early signet ring cell gastric carcinoma using magnification endoscopy with narrow band imaging(NBI).METHODS: A retrospective review was conducted of 12 cases of early signet ring cell... AIM: To identify the features of early signet ring cell gastric carcinoma using magnification endoscopy with narrow band imaging(NBI).METHODS: A retrospective review was conducted of 12 cases of early signet ring cell gastric carcinoma who underwent treatment in a single institution between January 2009 and April 2013. All patients had magnification endoscopy with NBI and indigo carmine contrast to closely examine the mucosal architecture, including the microvasculature and arrangement of gastric pits. Histologic examination of the final endoscopic submucosal dissection or gastrectomy specimen was performed and compared with the endoscopic findings to identify patterns specific to signet ring cell carcinoma.RESULTS: Twelve patients with early signet ring cell gastric carcinoma were identified; 75% were male, and average age was 61 years. Most of the lesions were stage T1a(83%), while the remainder were T1b(17%). The mean lesion size was 1.4 cm2. On standard endoscopy, all 12 patients had a pale, flat lesion without any evidence of mucosal abnormality such as ulceration, elevation, or depression. On magnification endoscopywith NBI, all of the patients had irregularities in the glands and microvasculature consistent with early gastric cancer. In addition, all 12 patients exhibited the "stretch sign", an elongation or expansion of the architectural structure. Histologic examination of the resected specimens demonstrated an expanded and edematous mucosal layer infiltrated with tumor cells.CONCLUSION: The "stretch sign" appears to be specific for signet ring cell carcinoma and may aid in the early diagnosis and treatment of this aggressive pathology. 展开更多
关键词 Signet ring cells Early gastric cancer Magnification endoscopy narrow band imaging Stretchsign Endoscopic submucosal dissection
下载PDF
Colonic polyps: Is it useful to characterize them with advanced endoscopy? 被引量:4
19
作者 Maria Lopez-Ceron Erwin Sanabria Maria Pellise 《World Journal of Gastroenterology》 SCIE CAS 2014年第26期8449-8457,共9页
There have been major developments in endoscopic imaging techniques in recent years.Endoscopes with high definition and magnification can provide high quality images that allow for the histological estimation of lesio... There have been major developments in endoscopic imaging techniques in recent years.Endoscopes with high definition and magnification can provide high quality images that allow for the histological estimation of lesions in vivo and in situ when combined with ancillary enhancement techniques such as chromoendoscopy(CE)and virtual CE(narrow band imaging fujinon intelligent chromoendoscopy,or i-Scan).Despite the enormous potential for these advanced techniques,their value and feasibility in the clinic are still doubted,particularly in cases of colonic polyps that are slated for removal,where in vivo characterization may be deemed unnecessary.However,there are several advantages offered by such advanced endoscopic imaging.CE with or without magnification demonstrates highly accurate histology and invasion depth prediction,and virtual CE is a feasible and less cumbersome alternative to CE in terms of histological estimation,though not sufficiently accurate for depth invasion prediction.Furthermore,the supplementary information provided by advanced imaging systems can assist the endoscopist in the selection of a strategic approach,such as in deciding whether a colonic lesion should be resected,left in situ,or requires more intensive surgical treatment.Lastly,advanced high-resolution imaging techniques may be more cost effective,such that histopathology of lowrisk lesions following resection can be eliminated.The results of these evaluations and comparisons with traditional CE are presented and discussed.Taken together,the benefits provided by these advanced capabilities justify their development,and advocates their use for the treatment and management of colonic polyps. 展开更多
关键词 Colon polyps CHROMOENDOSCOPY narrow band imaging Fujinon intelligent chromoendoscopy i-Scan COLONOSCOPY Optical biopsy
下载PDF
Magnifying endoscopy of gastric epithelial dysplasia based on the morphologic characteristics 被引量:4
20
作者 Hwa Mi Kang Gwang Ha Kim +4 位作者 Do Youn Park Hong Ryeol Cheong Dong Hoon Baek Bong Eun Lee Geun Am Song 《World Journal of Gastroenterology》 SCIE CAS 2014年第42期15771-15779,共9页
AIM: To investigate the difference in magnifying endoscopic findings of gastric epithelial dysplasias (GEDs) according to the morphologic characteristics.
关键词 STOMACH DYSPLASIA narrow band imaging Magnifying endoscopy MUCIN
下载PDF
上一页 1 2 下一页 到第
使用帮助 返回顶部