Could near focus endoscopy,narrow-band imaging,and acetic acid improve the visualization of microscopic features of stomach mucosa?

BACKGROUND Conventional magnifying endoscopy with narrow-band imaging(NBI)observation of the gastric body mucosa shows dominant patterns in relation to the regular arrangement of collecting venules,subepithelial capillary network,and gastric pits.AIM To evaluate the effectiveness of a new one-dual(near)focus,NBI mode in the assessment of the microscopic features of gastric body mucosa compared to conventional magnification.METHODS During 2021 and 2022,68 patients underwent proximal gastrointestinal endoscopy using magnification endoscopic modalities subsequently applying acetic acid(AA).The GIF-190HQ series NBI system with dual focus capability was used for the investigation of gastric mucosa.At the time of the endoscopy,the gastric body mucosa of all enrolled patients was photographed using the white light endoscopy(WLE),near focus(NF),NF-NBI,AA-NF,and AA-NF-NBI modes.RESULTS The WLE,NF and NF-NBI endoscopic modes for all patients(204 images)were classified in the same order into three groups.Two images from each patient for the AA-NF and AA-NF-NBI endoscopic modes were classified in the same order.According to all three observers who completed the work independently,NF magnification was significantly superior to WLE(P<0.01),and the NF-NBI mode was significantly superior to NF magnification(P<0.01).After applying AA,the three observers confirmed that AA-NF-NBI was significantly superior to AA-NF(P<0.01).Interobserver kappa values for WLE were 0.609,0.704,and 0.598,respectively and were 0.600,0.721,and 0.637,respectively,for NF magnification.For the NF-NBI mode,the values were 0.378,0.471,and 0.553,respectively.For AA-NF,they were 0.453,0.603,and 0.480,respectively,and for AA-NF-NBI,they were 0.643,0.506,and 0.354,respectively.CONCLUSION When investigating gastric mucosa in microscopic detail,NF-NBI was the most powerful endoscopic mode for assessing regular arrangement of collecting venules,subepithelial capillary network,and gastric pits among the five endoscopic modalities investigated in this study.AA-NF-NBI was the most powerful endoscopic mode for analyzing crypt opening and intervening part.

Magnifying narrow-band imaging endoscopy is superior in diagnosis of early gastric cancer

AIM:To evaluate the diagnostic effectiveness of white light endoscopy,magnifying endoscopy(ME),and magnifying narrow-band imaging endoscopy(ME-NBI) in detecting early gastric cancer(EGC).METHODS:From March 2010 to June 2012,a total of 3616 patients received screening for gastric cancer by magnifying endoscopy. There were 3675 focal gastric lesions detected using conventional high definition white light endoscopy(HD-WLE) in four different referentialhospitals that were recruited for further investigation using ME and ME-NBI. The images obtained from HD-WLE,ME,and ME-NBI were reviewed by four experienced endoscopists to evaluate their diagnostic effectiveness for EGC. The diagnosis of cancerous and non-cancerous lesions was conducted by evaluating the microvascular and microsurface patterns using the VS classification system. The final endoscopic diagnosis of each lesion was determined by consultation when a disagreement occurred. We used histopathological results as the gold standard for the diagnosis of EGC.RESULTS:Among the 3675 lesions found,1508 were validated by pathological findings as chronic gastritis,1279 as chronic gastritis with intestinal metaplasia,631 as low-grade neoplasia,and 257 as EGC. The sensitivity,specificity,positive predictive value,negative predictive value,and accuracy of HD-WLE for the diagnosis of EGC were 71.2%,99.1%,85.5%,97.9% and 97.1%,respectively. The results of ME for diagnosing EGC were 81.3%,98.8%,83.3%,98.6% and 97.6%,respectively. The results of ME-NBI for the diagnosis of EGC were 87.2%,98.6%,82.1%,99.0% and 97.8%,respectively. The diagnostic sensitivity and accuracy of paired ME and ME-NBI were significantly better than those of HD-WLE(P < 0.05).CONCLUSION:HD-WLE has a relatively high accuracy for diagnosing EGC and is an effective screening tool. Further investigations of ME and ME-NBI are required to achieve superior accuracy.

Standard vs magnifying narrow-band imaging endoscopy for diagnosis of Helicobacter pylori infection and gastric precancerous conditions

BACKGROUND Advances in endoscopic imaging enable the identification of patients at high risk of gastric cancer.However,there are no comparative data on the utility of standard and magnifying narrow-band imaging(M-NBI)endoscopy for diagnosing Helicobacter pylori(H.pylori)infection,gastric atrophy,and intestinal metaplasia.AIM To compare the diagnostic performance of standard and M-NBI endoscopy for H.pylori gastritis and precancerous conditions.METHODS In 254 patients,standard endoscopy findings were classified into mosaic-like appearance(type A),diffuse homogenous redness(type B),and irregular redness with groove(type C).Gastric mucosal patterns visualized by M-NBI were classified as regular round pits with polygonal sulci(type Z-1),more dilated and linear pits without sulci(type Z-2),and loss of gastric pits with coiled vessels(type Z-3).RESULTS The diagnostic accuracy of standard and M-NBI endoscopy for H.pylori gastritis was 93.3%and 96.1%,respectively.Regarding gastric precancerous conditions,the accuracy of standard and M-NBI endoscopy was 72.0%vs 72.6%for moderate to severe atrophy,and 61.7%vs.61.1%for intestinal metaplasia in the corpus,respectively.Compared to type A and Z-1,types B+C and Z-2+Z-3 were significantly associated with moderate to severe atrophy[odds ratio(OR)=5.56 and 8.67]and serum pepsinogen I/II ratio of≤3(OR=4.48 and 5.69).CONCLUSION Close observation of the gastric mucosa by standard and M-NBI endoscopy is useful for the diagnosis of H.pylori gastritis and precancerous conditions.

Diagnostic performance of magnifying narrow-band imaging for early gastric cancer: A meta-analysis

AIM: To investigate the performance of magnifying endoscopy with narrow-band imaging(ME-NBI) in the diagnosis of early gastric cancer(EGC).METHODS: Systematic literature searches were conducted until February 2014 in Pub Med, EMBASE, Web of Science, Ovid, Scopus and the Cochrane Library databases by two independent reviewers. Meta-analysis was performed to calculate the pooled sensitivity, specificity and diagnostic odds ratio and to construct a summary receiver operating characteristic(ROC) curve. Subgroup analyses were performed based on the morphology type of lesions, diagnostic standard, the size of lesions, type of assessment, country and sample size to explore possible sources of heterogeneity. A Deeks' asymmetry test was used to evaluate the publication bias.RESULTS: Fourteen studies enrolling 2171 patients were included. The pooled sensitivity, specificity and diagnostic odds ratio for ME-NBI diagnosis of EGC were 0.86(95%CI: 0.83-0.89), 0.96(95%CI: 0.95-0.97) and 102.75(95%CI: 48.14-219.32), respectively, with the area under ROC curve being 0.9623. Among the 14 studies, six also evaluated the diagnostic value of conventional white-light imaging, with a sensitivityof 0.57(95%CI: 0.50-0.64) and a specificity of 0.79(95%CI: 0.76-0.81). When using "VS"(vessel plus surface) ME-NBI diagnostic systems in gastric lesions of depressed macroscopic type, the pooled sensitivity and specificity were 0.64(95%CI: 0.52-0.75) and 0.96(95%CI: 0.95-0.98). For the lesions with a diameter less than 10 mm, the sensitivity and specificity were 0.74(95%CI: 0.65-0.82) and 0.98(95%CI: 0.97-0.98).CONCLUSION: ME-NBI is a promising endoscopic tool in the diagnosis of early gastric cancer and might be helpful in further target biopsy.

Endoscopic detection and diagnostic strategies for minute gastric cancer:A real-world observational study

BACKGROUND Minute gastric cancers(MGCs)have a favorable prognosis,but they are too small to be detected by endoscopy,with a maximum diameter≤5 mm.AIM To explore endoscopic detection and diagnostic strategies for MGCs.METHODS This was a real-world observational study.The endoscopic and clinicopathological parameters of 191 MGCs between January 2015 and December 2022 were retrospectively analyzed.Endoscopic discoverable opportunity and typical neoplastic features were emphatically reviewed.RESULTS All MGCs in our study were of a single pathological type,97.38%(186/191)of which were differentiated-type tumors.White light endoscopy(WLE)detected 84.29%(161/191)of MGCs,and the most common morphology of MGCs found by WLE was protruding.Narrow-band imaging(NBI)secondary observation detected 14.14%(27/191)of MGCs,and the most common morphology of MGCs found by NBI was flat.Another three MGCs were detected by indigo carmine third observation.If a well-demarcated border lesion exhibited a typical neoplastic color,such as yellowish-red or whitish under WLE and brownish under NBI,MGCs should be diagnosed.The proportion with high diagnostic confidence by magnifying endoscopy with NBI(ME-NBI)was significantly higher than the proportion with low diagnostic confidence and the only visible groups(94.19%>56.92%>32.50%,P<0.001).CONCLUSION WLE combined with NBI and indigo carmine are helpful for detection of MGCs.A clear demarcation line combined with a typical neoplastic color using nonmagnifying observation is sufficient for diagnosis of MGCs.MENBI improves the endoscopic diagnostic confidence of MGCs.

Effective use of the Japan Narrow Band Imaging Expert Team classification based on diagnostic performance and confidence level

Five years have passed since the Japan Narrow Band Imaging Expert Team (JNET) classification was proposed in 2014. However, the diagnostic performance of this classification has not yet been established. We conducted a retrospective study and a systematic search of Medical Literature Analysis and Retrieval System On-Line. There were three retrospective single center studies about the diagnostic performance of this classification. In order to clarify this issue, we reviewed our study and three previous studies. This review revealed the diagnostic performance in regards to three important differentiations.(1) Neoplasia from non-neoplasia;(2) malignant neoplasia from benign neoplasia;and (3) deep submucosal invasive cancer (D-SMC) from other neoplasia. The sensitivity in differentiating neoplasia from non-neoplasia was 98.1%-99.8%. The specificity in differentiating malignant neoplasia from benign neoplasia was 84.7%-98.2% and the specificity in the differentiation D-SMC from other neoplasia was 99.8%-100.0%. This classification would enable endoscopists to identify almost all neoplasia, to appropriately determine whether to perform en bloc resection or not, and to avoid unnecessary surgery. This article is the first review about the diagnostic performance of the JNET classification. Previous reports about the diagnostic performance have all been retrospective single center studies. A large-scale prospective multicenter evaluation study is awaited for the validation.

3种不同内窥镜联合诊断对提高早期食管癌诊断率的应用价值评估

目的:探究与分析3种不同内窥镜联合诊断在提高早期食管癌诊断率中的应用价值。方法:回顾性分析2020年3月至2022年2月新疆医科大学第一附属医院收治的110例早期食管癌和(或)癌前病变患者的临床资料,按照病理学诊断结果将其分为食管癌组(65例)和炎症组(45例),两组患者均采用超声胃镜、碘染色内窥镜以及放大电子染色内窥镜(ME-NBI)3中不同内窥镜进行早期诊断及检查。采用单因素分析探讨影响早期食管癌诊断价值的高危因素;采用logistic多因素回归分析探讨早期食管癌的诊断价值;对比不同内窥镜诊断方法对早期食管癌的诊断效能,比较染色体第一、二、三、四阶段的受试者工作特征(ROC)曲线下面积(AUC)。结果:炎症组与食管癌组的患者年龄、中位年龄、病变位置及环周面积,以及超声内窥镜下病变情况比较,差异无统计学意义(P>0.05)。炎症组与食管癌组患者的碘染色内窥镜下表现、ME-NBI上皮内乳头状毛细血管袢(IPCL)分型和草席征比较,差异有统计学意义(χ^(2)=5.995、20.168、5.960,P<0.05)。将超声胃镜、碘染色内窥镜以及ME-NBI的病灶浸润深度、碘染色改变情况以及草席征纳入logistic回归分析方程中,第四阶段的AUC明显高于第一、二及三阶段,第三阶段的AUC要明显高于第一、二阶段,第二阶段的ACU要明显高于第一阶段,ACU为9.663(95%CI:0.935~9.551)。联合内窥镜诊断早期食管癌的灵敏度、特异度均明显高于超声内窥镜、碘染色内窥镜以及ME-NBI的单独诊断结果,差异有统计学意义(χ^(2)=5.409、27.948、12.819、19.786、9.148、15.294,P<0.05)。结论:不同类型内窥镜联合诊断早期食管癌明显优于单一内窥镜检查方法,联合诊断早期食管癌具有较高的诊断准确率。

Value of magnifying endoscopy with narrow-band imaging in diagnosis of 124 early gastric neoplastic lesions

Objective To investigate the value of intervening part(IP)ratio under magnifying endoscopy with narrowband imaging(ME-NBI)in the diagnosis of early gastric neoplastic lesions.Methods From September 2012 to May 2015,a total of 124 patients with suspected superficial gastric neoplastic lesions under white light endoscope(WLI)were enrolled,87 male with mean age of(63.

放大内镜结合窄带成像技术和醋酸-靛胭脂染色联合多层螺旋CT对早期胃癌及癌前病变的诊断效能及临床意义

目的 分析放大内镜结合窄带成像技术(ME-NBI)和醋酸-靛胭脂染色联合多层螺旋CT对早期胃癌及癌前病变的诊断效能及临床意义。方法 选取2019年2月-2022年3月于该院就诊的202例疑似早期胃癌及癌前病变患者作为研究对象,所有患者均进行ME-NBI、醋酸-靛胭脂染色和多层螺旋CT检测;采用受试者操作特征曲线(ROC curve),分析不同检查方法对早期胃癌及癌前病变的诊断价值,以胃癌病理结果为金标准,采用四格表,分析ME-NBI、醋酸-靛胭脂染色联合多层螺旋CT和三者联合对早期胃癌及癌前病变的诊断价值。结果 ME-NBI和醋酸-靛胭脂染色两者联合检查的图像质量明显高于各自单独检查,差异均有统计学意义(P <0.05)。早期胃癌及癌前病变患者临床特征中的分化程度比较,差异有统计学意义(P <0.05)。ME-NBI诊断早期胃癌及癌前病变的曲线下面积(AUC)为0.853,准确度为85.64%,敏感度为88.37%,特异度为83.62%,醋酸-靛胭脂染色诊断早期胃癌及癌前病变的AUC为0.814,准确度为81.68%,敏感度为83.72%,特异度为80.17%,多层螺旋CT诊断早期胃癌及癌前病变的AUC为0.804,准确度为80.69%,敏感度为82.56%,特异度为79.31%,三者联合诊断早期胃癌及癌前病变的AUC为0.893,准确度为89.60%,敏感度为93.02%,特异度为87.07%。结论 ME-NBI和醋酸-靛胭脂染色联合多层螺旋CT,对早期胃癌及癌前病变具有较高的诊断效能,可在临床中推广使用。

Gastric adenocarcinoma of fundic gland type: Five cases treated with endoscopic resection

Recently,a new disease entity termed gastric adenocarcinoma of fundic gland type(GA-FG) was proposed.We treated five cases of GA-FG with endoscopic submucosal dissection.All tumors were small and located in the upper third of the stomach.Four tumors were macroscopically identified as 0-IIa and one was identified as 0-Ⅱb.Narrow-band imaging with magnifying endoscopy showed an irregular microvascular pattern in 2 cases and a regular microvascular pattern in the remainder.All tumors arose from the deep layer of the lamina propria mucosae and showed submucosal invasion.Lymphatic invasion was seen only in one case,while no venous invasion was recognized.All tumors were positive for pepsinogen-Ⅰ and MUC6 by immunohistochemistry.None showed p53 overexpression,and the labeling index of Ki-67 was low in all cases.All cases have been free from recurrence or metastasis.Herein,we discussed the clinicopathological features of GA-FG in comparison with past reports.

Association between white opaque substance under magnifying colonoscopy and lipid droplets in colorectal epithelial neoplasms

AIM To examine the association between white opaque substance(WOS) and histologically verified lipiddroplets in colorectal epithelial neoplasms.METHODS We reviewed colonoscopy records at our institution from 2014 to 2016 and identified cases of endoscopically or surgically resected colorectal epithelial neoplasms observed by magnifying narrow-band imaging(M-NBI) colonoscopy. Immunohistochemistry was used to stain tumors with a monoclonal antibody specific to adipophilin as a marker of lipids. The expression and distribution of adipophilin were compared between WOS-positive and WOS-negative lesions and among tumors classified by histologic type and depth of invasion.RESULTS Under M-NBI colonoscopy, 81 lesions were positive for WOS and 48 lesions were negative for WOS. The rate of adipophilin expression was significantly higher in WOS-positive lesions(95.1%) than in WOS-negative lesions(68.7%)(P = 0.0001). The incidence of deep adipophilin expression was higher in WOS-positive lesions(24.7%) than in WOS-negative lesions(4.2%)(P = 0.001). The incidence of deep expression was predominant among cancers with massive submucosal invasion(62.5%) compared to adenoma(7.2%) and high-grade dysplasia or cancers with slight submucosal invasion(12.7%)(P = 0.0001).CONCLUSION The distribution of lipid droplets may be closely associated with the visibility of WOS under M-NBI colonoscopy, and with histologic grade and depth of tumor invasion.

Update on diagnosis and treatment of early signet-ring cell gastric carcinoma: A literature review

Gastric signet-ring cell gastric carcinoma(GSRC)is an unfavorable subtype of gastric cancer(GC)that presents with greater invasiveness and poorer prognosis in advanced stage than other types of GC.However,GSRC in early stage is often considered an indicator of less lymph node metastasis and more satisfying clinical outcome compared to poorly differentiated GC.Therefore,the detection and diagnosis of GSRC at early stage undoubtedly play a crucial role in the management of GSRC patients.In recent years,technological advancement in endoscopy including narrow-band imaging and magnifying endoscopy has significantly improved the accuracy and sensitivity of the diagnosis under endoscopy for GSRC patients.Researches have confirmed that early stage GSRC that meets the expanded criteria of endoscopic resection showed comparable outcomes to surgery after receiving endoscopic submucosal dissection(ESD),indicating that ESD could be considered standard treatment for GSRC after thorough selection and evaluation.This article summarizes the current knowledge and updates pertaining to the endoscopic diagnosis and treatment of early stage signet-ring cell gastric carcinoma.

放大内镜结合窄带成像技术在老年胃癌早期及癌前病变中的诊断价值

目的观察放大内镜结合窄带成像技术(ME-NBI)在老年胃癌早期及癌前病变中的诊断价值。方法回顾性分析福建医科大学教学医院福建省老年医院2019年1月至2021年12月收治入院时疑似老年胃癌早期及癌前病变患者58例,并接受常规内镜检查与ME-NBI检查,并经内镜下病理检查为金标准确诊的患者。根据病理金标准,分析常规内镜检查与ME-NBI检查的诊断敏感度与特异度,明确诊断价值。结果病理检查结果:7例良性病变,23例癌前病变,19例胃癌早期,9例进展期癌。而在其他两种检查结果分析,ME-NBI检查结果为5例良性病变,23例癌前病变,21例胃癌早期,9例进展期癌。在常规检查检查结果为8例良性病变,19例癌前病变,20例胃癌早期,11例进展期癌。在胃癌早期的诊断价值比较中,白光内镜和ME-NBI两种检查在敏感度比较中,差异无统计学意义(P>0.05)。而在癌前病变的敏感度与特异度、胃癌早期特异度的比较中,ME-NBI检查高于常规检查,差异有统计学意义(P<0.05)。结论在疑似老年胃癌早期及癌前病变的患者检查中,由于老年胃退化机制的影响下,采取放大内镜结合窄带成像技术实施检查,较常规内镜检查,能获得更高的诊断敏感度与特异度,以为临床实施早期治疗,提供参考依据。

联合内镜诊断模型在早期食管癌诊断中的应用价值探讨

目的探讨全新联合内镜诊断模型在提高早期食管癌诊断率中的应用价值。方法选取2018年1月至2019年1月期间就诊福建省食管癌早诊早治促进联盟中高发区多家医院疑诊早期食管癌/癌前病变患者共206例作为研究对象。根据病理诊断结果分为高级别上皮内瘤变/食管癌组和炎症/低级别上皮内瘤变组,对比超声内镜(EUS)、碘染色素内镜及放大电子染色内镜(ME-NBI)在早期食管癌中的诊断价值,并建立多种联合内镜诊断模型,创建受试者工作特征曲线(ROC曲线)评价其对早期食管癌的诊断价值。结果三种内镜诊断早期食管癌的敏感度依次为93.6%、83.2%及73.6%;特异度分别为37.0%、25%及55.6%;准确度分别为86.4%、82.0%及72.8%。单因素分析显示各内镜下表现(浸润深度、IPCL分型、碘染情况、草席征)对早期食管癌有鉴别意义(P<0.05)。在校准年龄、性别、病灶位置等因素后,纳入上述影响因素的联合内镜诊断模型诊断早期食管癌的灵敏度、特异度和准确度分别为95.6%、89.1%和80.6%,ROC曲线下面积为0.951。结论多种内镜联合诊断明显优于单一的内镜检查方法,结合EUS、ME-NBI、碘染色素内镜的联合内镜诊断模型可明显提高早期食管癌的诊断准确性。

放大内镜联合窄谱成像与色素内镜对早期食管癌及癌前病变的应用价值

目的探讨放大内镜联合窄谱成像与色素内镜对早期食管癌及癌前病变的诊断价值。方法选行内镜黏膜下剥离术(ESD)的74例患者,术前分别行白光内镜、放大内镜联合窄谱成像、色素内镜等检查食管,对所有放大内镜联合窄谱成像阳性或色素内镜阳性部位均取活检。以ESD后的病理结果作为诊断标准,比较放大内镜联合窄谱成像结果和色素内镜结果与ESD后病理的一致性。分析上述2种内镜检查方式对早期食管癌及癌前病变诊断的准确率。结果放大内镜联合窄谱成像与ESD后病理一致性高于色素内镜,差异有统计学意义(P<0.05)。结论放大内镜联合窄谱成像对早期食管癌及癌前病变的诊断有较高的准确率。与色素内镜相比,放大内镜联合窄谱成像在鉴定早期食管癌及癌前病变方面效果更优。

JNET Type 2B在结直肠肿瘤内镜诊断中的应用价值

目的探讨影响JNET 2B分型预测病变组织病理学类型准确性的因素。方法收集2018年7月~2021年4月南方医科大学南方医院行窄带光成像放大内镜检查诊断为JNET 2B型的261例结直肠病变资料,分析影响JNET 2B型诊断病变病理性质的因素,包括病灶形态、大小、位置及PP分型。结果纳入的261个病变包括低级别上皮内瘤变91例(34.9%),高级别上皮内瘤变132例(50.6%),黏膜下浅层浸润癌13例(5.0%),黏膜下深层浸润癌25例(9.6%)。JNET 2B病理预测符合率为55.6%(145/261)。病灶的形态学分类及大小与JNET 2B分型预测病变组织病理学类型准确性的差异有统计学意义(P<0.001),PP分型对JNET 2B预测病变组织病理学类型准确性的差异具有统计学意义(P<0.001)。结论结直肠病灶的形态学分类和病灶大小会对JNET 2B分型预测病变组织病理学类型准确性产生影响,联合JNET分型和PP分型能提高病变病理组织学预测的准确性。

窄带成像技术结合放大内镜观察食管病变后食管上皮乳头内毛细血管袢改变的价值

目的:探讨窄带成像技术结合放大内镜(narrowband imaging combined with magnifying endoscopy,NBI-ME)观察食管病变后食管上皮乳头内毛细血管袢(intraepapillary papillary capillary loop,IPCL)改变的价值.方法:选取2018年5月-2019年6月本院收治的食管病变患者64例,所有患者进行NBI-ME及普通白光内镜检查,观察IPCL的形态,并对病变区行病理活检.比较NBI-ME及普通白光内镜的图像清晰度评分,分析NBI分级及NBI检测的IPCL分型与病理诊断结果的关系,以病理诊断为金标准分析NBI-ME癌前病变及早期食管癌的诊断效能.结果:64例食管病变患者中,早期食管癌18例(28.13%),高级别瘤变5例(7.81%),低级别瘤变16例(25.00%),食管炎25例(39.06%).NBI-ME的图像清晰度评分明显高于普通白光内镜(P<0.05).食管炎NBI分级以Ⅲ级和阴性为主;低级别瘤变NBI分级以Ⅱ级和Ⅲ级为主;高级别瘤变和早期食管癌NBI分级均以Ⅰ级和Ⅱ级为主.食管炎IPCL分型主要呈Ⅱ型(84.00%);低级别瘤变IPCL分型呈Ⅱ、Ⅲ型,其中Ⅲ型占68.75%;高级别瘤变的IPCL主要呈Ⅲ型,占80.00%;早期食管癌IPCL分型主要呈Ⅳ型,占83.33%.NBI-ME诊断癌前病变与早期食管癌的灵敏度为87.18%,特异度为100%,漏诊率为12.82%.结论:NBI-ME能够细致观察食管病变患者的IPCL,其对癌前病变及早期食管癌的诊断效能较高.

Curative ESD for intraepithelial esophageal carcinoma with leiomyoma mimicking submucosal invasive carcinoma

This case report presents a 65-year-old man who developed early esophageal cancer with leiomyoma treated by endoscopic submucosal dissection(ESD).There have been several reports of co-existing superficial esophageal cancer and leiomyoma treated by endoscopic mucosal resection.However,there is no previous report describing the co-existing lesion treated by ESD.In order to determine treatment strategies for esophageal cancer,accurate endoscopic evaluation of the cancerous depth is essential.In the present case,the combination of endoscopic ultrasonography and narrow-band imaging system with magnifying endoscopy was extremely useful to evaluate the superficial esophageal cancer with leiomyoma,which lead to the appropriate treatment,ESD.

放大内镜联合窄带成像技术在胃癌术前诊断及病理分型中的应用

目的探究放大内镜联合窄带成像技术在胃癌术前诊断及病理分型中的应用效果。方法回顾性分析2018年11月至2020年1月于我院就诊的68例疑似胃癌患者的临床资料,采用常规放大模式、放大内镜联合窄带成像模式进行内镜检查。比较不同检查模式的图像清晰度;以病理检查结果为金标准,分析放大内镜联合窄带成像模式对胃癌及其病理分型的诊断效能。结果放大内镜联合窄带成像模式下的病变轮廓、胃小凹形态、微血管形态图像清晰度均显著优于常规放大模式,差异具有统计学意义(P<0.05)。放大内镜联合窄带成像模式对早期胃癌的诊断灵敏度、准确度明显高于常规放大模式,差异具有统计学意义(P<0.05)。放大内镜联合窄带成像模式对分化型胃癌、未分化型胃癌的诊断符合率高于常规放大模式,差异具有统计学意义(P<0.05)。结论放大内镜联合窄带成像技术对早期胃癌以及病理分型的诊断准确率较高,对于临床早期诊治胃癌具有重要的作用。

常规放大内镜联合病理诊断消化道早期癌专家共识

食管癌和胃癌均为我国常见的恶性肿瘤,提高生存率的关键在于早期发现。放大内镜技术在消化道早期癌的筛查和诊断中具有重要意义。中华医学会消化内镜学分会消化系早癌内镜诊断与治疗协作组及《中华消化内镜杂志》编委会组织相关专家,在前期发布的《上消化道肿瘤高危人群放大内镜检查中西部专家意见》的基础上,经多次讨论,形成了本共识。共识主要针对常规应用放大内镜进行上消化道早期癌筛查及与病理诊断联合应用的开展方法进行阐述,并对常规放大内镜筛查应用的临床场景做进一步的细化,以期为消化道早期癌筛查工作提供参考。