Individualized vaginal applicator for stage IIb primary vaginal adenocarcinoma:A case report

BACKGROUND Primary vaginal cancer is rare and most vaginal tumors are metastatic,often arising from adjacent gynecologic structures.Primary vaginal cancers are also more common among postmenopausal women and most of these are squamous cell carcinomas,with adenocarcinomas being relatively rare.Vaginal bleeding is the most common clinical manifestation of vaginal adenocarcinoma.About 70%of vaginal adenocarcinomas are stage I lesions at the time of diagnosis,for which radical surgery is recommended.However,more advanced vaginal cancers are not amenable to radical surgical treatment and have poor clinical outcomes.Optimal treatments modes are still being explored.Here,we report a rare case of stage IIb primary vaginal adenocarcinoma for which an individually designed vaginal applicator for after-loading radiotherapy was used to achieve good tumor control.CASE SUMMARY A 62-year-old woman presented to our clinic after 3 months of abnormal postmenopausal vaginal bleeding.Gynecological examination,computed tomography(CT),and positron emission tomography-CT showed a large mass(about 5 cm)on the anterior vaginal wall.Colposcopy biopsy confirmed adenocarcinoma of vaginal origin.After three cycles of carboplatin plus paclitaxel chemotherapy,the lesion partially shrunk.The patient then received external irradiation of 45 gray(gy)in 25 fractions,which further reduced the vaginal lesion,followed by after-loading radiotherapy of 30 gy in 5 fractions with an individually designed vaginal applicator.Three months later,magnetic resonance imaging showed a slight thickening CONCLUSION Primary vaginal adenocarcinoma is rare,and prognosis is poor in most vaginal cancers of locally advanced stages,which cannot be treated with radical surgery.Better tumor control can be achieved with an individualized vaginal applicator that allows administration of a higher radical dose to the tumor area while protecting normal tissues.

Vaginal clear cell adenocarcinoma in Herlyn-Werner-Wunderlich syndrome:A case report

BACKGROUND Herlyn-Werner-Wunderlich(HWW)syndrome is a rare Müllerian duct anomaly,characterized by a combination of urogenital abnormalities.The occurrence of primary cervico-vaginal carcinomas in patients with HWW syndrome is excep-tionally rare,posing significant challenges for screening,early diagnosis,and effective management.CASE SUMMARY We report a rare case of primary clear cell carcinoma of the vagina complicated in a 40-year-old woman with HWW syndrome.The patient presented with irregular vaginal bleeding for 4 years.On gynecological examination,an oblique vaginal septum was suspected.Surgical resection of the vaginal septum revealed a com-municating fistula and a tumor on the left vagina and the left side of the septum,which was confirmed as clear cell carcinoma.One month later,she underwent a radical hysterectomy,vaginectomy,bilateral salpingo-oophorectomy,and pelvic lymph node dissection.Due to significant side effects,she completed only one course of chemotherapy.A year later,lung metastasis was detected and continued to grow.A thoracoscopic wedge resection of the right upper lobe was performed 4 years after the initial surgery.We also conducted a systemic review of the lite-rature on primary cervical or vaginal carcinoma in HWW syndrome to explore this rare entity.CONCLUSION Cervico-vaginal adenocarcinomas in patients with HWW syndrome are occult,and require early surgical intervention and regular imaging surveillance.

Identification of breath volatile organic compounds to distinguish pancreatic adenocarcinoma,pancreatic cystic neoplasm,and patients without pancreatic lesions

BACKGROUND Volatile organic compounds(VOCs)are a promising potential biomarker that may be able to identify the presence of cancers.AIM To identify exhaled breath VOCs that distinguish pancreatic ductal adenocar-cinoma(PDAC)from intraductal papillary mucinous neoplasm(IPMN)and healthy volunteers.METHODS We collected exhaled breath from histologically proven PDAC patients,radiological diagnosis IPMN,and healthy volunteers using the ReCIVA®device between 10/2021-11/2022.VOCs were identified by thermal desorption-gas chromatography/field-asymmetric ion mobility spectrometry and compared between groups.RESULTS A total of 156 participants(44%male,mean age 62.6±10.6)were enrolled(54 PDAC,42 IPMN,and 60 controls).Among the nine VOCs identified,two VOCs that showed differences between groups were dimethyl sulfide[0.73 vs 0.74 vs 0.94 arbitrary units(AU),respectively;P=0.008]and acetone dimers(3.95 vs 4.49 vs 5.19 AU,respectively;P<0.001).After adjusting for the imbalance parameters,PDAC showed higher dimethyl sulfide levels than the control and IPMN groups,with adjusted odds ratio(aOR)of 6.98(95%CI:1.15-42.17)and 4.56(1.03-20.20),respectively(P<0.05 both).Acetone dimer levels were also higher in PDAC compared to controls and IPMN(aOR:5.12(1.80-14.57)and aOR:3.35(1.47-7.63),respectively(P<0.05 both).Acetone dimer,but not dimethyl sulfide,performed better than CA19-9 in PDAC diagnosis(AUROC 0.910 vs 0.796).The AUROC of acetone dimer increased to 0.936 when combined with CA19-9,which was better than CA19-9 alone(P<0.05).CONCLUSION Dimethyl sulfide and acetone dimer are VOCs that potentially distinguish PDAC from IPMN and healthy participants.Additional prospective studies are required to validate these findings.

Comparison between solid pseudopapillary neoplasms of the pancreas and pancreatic ductal adenocarcinoma with cystic changes using computed tomography

BACKGROUND Solid pseudopapillary neoplasms of the pancreas(SPN)share similar imaging findings with pancreatic ductal adenocarcinoma with cystic changes(PDAC with cystic changes),which may result in unnecessary surgery.AIM To investigate the value of computed tomography(CT)in differentiation of SPN from PDAC with cystic changes.METHODS This study retrospectively analyzed the clinical and imaging findings of 32 patients diagnosed with SPN and 14 patients diagnosed with PDAC exhibiting cystic changes,confirmed through pathological diagnosis.Quantitative and qualitative analysis was performed,including assessment of age,sex,tumor size,shape,margin,density,enhancement pattern,CT values of tumors,CT contrast enhancement ratios,“floating cloud sign,”calcification,main pancreatic duct dilatation,pancreatic atrophy,and peripancreatic invasion or distal metastasis.Multivariate logistic regression analysis was used to identify relevant features to differentiate between SPN and PDAC with cystic changes,and receiver operating characteristic curves were obtained to evaluate the diagnostic performance of each variable and their combination.RESULTS When compared to PDAC with cystic changes,SPN had a lower age(32 years vs 64 years,P<0.05)and a slightly larger size(5.41 cm vs 3.90 cm,P<0.05).SPN had a higher frequency of“floating cloud sign”and peripancreatic invasion or distal metastasis than PDAC with cystic changes(both P<0.05).No significant difference was found with respect to sex,tumor location,shape,margin,density,main pancreatic duct dilatation,calcification,pancreatic atrophy,enhancement pattern,CT values of tumors,or CT contrast enhancement ratios between the two groups(all P>0.05).The area under the receiver operating characteristic curve of the combination was 0.833(95%confidence interval:0.708-0.957)with 78.6%sensitivity,81.3%specificity,and 80.4%accuracy in differentiation of SPN from PDAC with cystic changes.CONCLUSION A larger tumor size,“floating cloud sign,”and peripancreatic invasion or distal metastasis are useful CT imaging features that are more common in SPN and may help discriminate SPN from PDAC with cystic changes.

Mixed neuroendocrine and adenocarcinoma of gastrointestinal tract:A complex diagnosis and therapeutic challenge

In this editorial we comment on the manuscript describing a case of adenocarcinoma mixed with a neuroendocrine carcinoma of the gastroesophageal junction.Mixed neuroendocrine and non-neuroendocrine neoplasms of the gastrointestinal system are rare heterogeneous group of tumors characterized by a high malignant potential,rapid growth,and poor prognosis.Due to the rarity of these cancers,the standard therapy is poorly defined.The diagnosis of these tumors is based on combination of morphological features,immunohistochemical and neuroendocrine and epithelial cell markers.Both endocrine and epithelial cell components can act independently of each other and thus,careful grading of each component separately is required.These cancers are aggressive in nature and the potential of each component has paramount importance in the choice of treatment and response.Regardless of the organ of origin,these tumors portend poor prognosis with increased proportion of neuroendocrine component.Multidisciplinary services and strategies are required for the management of these mixed malignancies to provide the best oncological outcomes.The etiopathogenesis of these mixed tumors remains obscure but poses interesting question.We briefly discuss a few salient points in this editorial.

Current considerations on intraductal papillary neoplasms of the bile duct and pancreatic duct

Pancreatobiliary intraductal papillary neoplasms(IPNs)represent precursors of pancreatic cancer or bile duct cholangiocarcinoma that can be detected and treated.Despite advances in diagnostic methods,identifying these premalignant lesions is still challenging for treatment providers.Modern imaging,biomarkers and molecular tests for genomic alterations can be used for diagnosis and follow-up.Surgical intervention in combination with new chemotherapeutic agents is considered the optimal treatment for malignant cases.The balance between the risk of malignancy and any risk of resection guides management policy;therefore,treatment should be individualized based on a meticulous preoperative assessment of high-risk stigmata.IPN of the bile duct is more aggressive;thus,early diagnosis and surgery are crucial.The conservative management of low-risk pancreatic branch-duct lesions is safe and effective.

Mucinous neoplasm of the appendix:A case report and review of literature

BACKGROUND Appendiceal mucinous neoplasms(AMNs),although not classified as rare,are relatively uncommon tumors most often discovered incidentally during colorectal surgery.Accurate identification of AMNs is difficult due to non-specific sym-ptoms,overlapping tumor markers with other conditions,and the potential for misdiagnosis.This underscores the urgent need for precision in diagnosis to pre-vent severe complications.CASE SUMMARY This case report describes the unexpected discovery and treatment of a low-grade AMN(LAMN)in a 74-year-old man undergoing laparoscopic hemicolectomy for transverse colon adenocarcinoma(AC).Preoperatively,non-specific gastroin-testinal symptoms and elevated tumor markers masked the presence of AMN.The tumor,presumed to be an AMN peritoneal cyst intraoperatively,was con-firmed as LAMN through histopathological examination.The neoplasm exhibited mucin accumulation and a distinct immunohistochemical profile:Positive for Ho-meobox protein CDX-2,Cytokeratin 20,special AT-rich sequence-binding protein 2,and Mucin 2 but negative for cytokeratin 7 and Paired box gene 8.This profile aids in distinguishing appendiceal and ovarian mucinous tumors.Postoperative recovery was uncomplicated,and the patient initiated adjuvant chemotherapy for the colon AC.CONCLUSION This case highlights the diagnostic complexity of AMNs,emphasizing the need for vigilant identification to avert potential complications,such as pseudomyxoma peritonei.

Mixed pancreatic ductal adenocarcinoma and well-differentiated neuroendocrine tumor:A case report

BACKGROUND Pancreatic mixed neuroendocrine-non-neuroendocrine neoplasms(MiNENs)are rare malignancies affecting the pancreas.The World Health Organization defines MiNENs as neoplasms composed of morphologically recognizable neuroendocrine and non-neuroendocrine components,each constituting 30%or more of the tumor volume.Adenocarcinoma-neuroendocrine carcinoma is the most frequent MiNEN combination.A well-differentiated neuroendocrine tumor(NET)component is rarely reported in MiNENs.CASE SUMMARY Here we report a rare case with intermingled components of ductal adenocarcinoma and grade 1 well-differentiated NET in the pancreas.The two tumors show distinct histology and significant differentiation discrepancy(poorly differentiated high grade adenocarcinoma and well-differentiated low grade NET),and also present as metastases in separate lymph nodes.Next generation sequencing of the two components demonstrates KRAS and TP53 mutations in the ductal adenocarcinoma,but no genetic alterations in the NET,suggesting divergent origins for these two components.Although tumors like this meet the diagnostic criteria for MiNEN,clinicians often find the diagnosis and staging confusing and impractical for clinical management.CONCLUSION Mixed NET/non-NET tumors with distinct histology and molecular profiles might be better classified as collision tumors rather than MiNENs.

Deep learning model based on primary tumor to predict lymph node status in clinical stage IA lung adenocarcinoma:a multicenter study

Objective:To develop a deep learning model to predict lymph node(LN)status in clinical stage IA lung adeno-carcinoma patients.Methods:This diagnostic study included 1,009 patients with pathologically confirmed clinical stage T1N0M0 lung adenocarcinoma from two independent datasets(699 from Cancer Hospital of Chinese Academy of Medical Sciences and 310 from PLA General Hospital)between January 2005 and December 2019.The Cancer Hospital dataset was randomly split into a training cohort(559 patients)and a validation cohort(140 patients)to train and tune a deep learning model based on a deep residual network(ResNet).The PLA Hospital dataset was used as a testing cohort to evaluate the generalization ability of the model.Thoracic radiologists manually segmented tumors and interpreted high-resolution computed tomography(HRCT)features for the model.The predictive performance was assessed by area under the curves(AUCs),accuracy,precision,recall,and F1 score.Subgroup analysis was performed to evaluate the potential bias of the study population.Results:A total of 1,009 patients were included in this study;409(40.5%)were male and 600(59.5%)were female.The median age was 57.0 years(inter-quartile range,IQR:50.0-64.0).The deep learning model achieved AUCs of 0.906(95%CI:0.873-0.938)and 0.893(95%CI:0.857-0.930)for predicting pN0 disease in the testing cohort and a non-pure ground glass nodule(non-pGGN)testing cohort,respectively.No significant difference was detected between the testing cohort and the non-pGGN testing cohort(P=0.622).The precisions of this model for predicting pN0 disease were 0.979(95%CI:0.963-0.995)and 0.983(95%CI:0.967-0.998)in the testing cohort and the non-pGGN testing cohort,respectively.The deep learning model achieved AUCs of 0.848(95%CI:0.798-0.898)and 0.831(95%CI:0.776-0.887)for predicting pN2 disease in the testing cohort and the non-pGGN testing cohort,respectively.No significant difference was detected between the testing cohort and the non-pGGN testing cohort(P=0.657).The recalls of this model for predicting pN2 disease were 0.903(95%CI:0.870-0.936)and 0.931(95%CI:0.901-0.961)in the testing cohort and the non-pGGN testing cohort,respectively.Conclusions:The superior performance of the deep learning model will help to target the extension of lymph node dissection and reduce the ineffective lymph node dissection in early-stage lung adenocarcinoma patients.

Concomitant pancreatic adenocarcinoma in a patient with branch-duct intraductal papillary mucinous neoplasm

Branch duct intraductal papillary mucinous neoplasms(BD-IPMN) are pre-malignant pancreatic cystic lesions which carry a small risk of malignant transformation within the cyst. Guidelines exist with respect to surveillance of the cysts using computed tomography, magnetic resonance imaging, and/or endoscopic ultrasound(EUS). There are reports that patients with IPMNs are at increased risk of developing pancreatic adenocarcinoma, which arises in an area separate to the IPMNs. We present two cases of pancreatic adenocarcinoma arising within the parenchyma, distinct from the IPMN-associated cyst, identified with EUS. This case report highlights that patients with BD-IPMN are at increased risk for pancreatic adenocarcinoma separate from the cyst and also the importance for endosonographers to carefully survey the rest of the pancreatic parenchyma separate from the cyst in order to identify small pancreatic adenocarcinomas.

Malignancy risk factors and prognostic variables of pancreatic mucinous cystic neoplasms in Chinese patients

BACKGROUND Pancreatic mucinous cystic neoplasms(MCNs)represent one of the precursor lesions of pancreatic ductal adenocarcinoma,and their detection has been facilitated by advances in preoperative imaging.Due primarily to the rarity of MCNs,however,there is limited knowledge regarding the prognostic variables and high-risk factors for malignant transformation.A more comprehensive and nuanced approach is necessary to fill this gap and provide a basis for improved treatment decisions and patient outcomes.AIM To investigate the high-risk factors associated with malignant MCNs and to explore the prognostic factors of MCN with associated invasive carcinoma(MCNAIC).METHODS All cases of resected MCNs from a single high-volume institution between January 2012 and January 2022 were retrospectively reviewed.Only cases with ovarian-type stroma verified by progesterone receptor staining were included.Preoperative features,histological findings and postoperative course were documented.Multivariate logistic regression was employed to investigate variables related to malignancy.Survival analysis was performed using the Kaplan-Meier curve,and the prognostic factors were assessed to evaluate the postoperative course of patients with MCN-AIC.RESULTS Among the 48 patients,36 had benign MCNs,and 12 had malignant MCNs(1 high-grade atypical hyperplasia and 11 MCN-AIC).Age,tumour size,presence of solid components or mural nodules and pancreatic duct dilatation were identified as independent risk factors associated with malignancy.The follow-up period ranged from 12 mo to 120 mo,with a median overall survival of 58.2 mo.Only three patients with MCN-AIC died,and the 5-year survival rate was 70.1%.All 11 cases of MCN-AIC were stage I,and extracapsular invasion was identified as a prognostic factor for poorer outcomes.CONCLUSION The risk factors independently associated with malignant transformation of MCNs included age,tumour size,presence of solid components or mural nodules,and pancreatic duct dilatation.Our study also revealed that encapsulated invasion was a favourable prognostic factor in MCN-AIC patients.

A Large Vaginal Bulge Might Not Be a Genital Prolapse

Vaginal tumors, whether benign or malignant, are rare. They include fibroepithelial polyps (FEPs), which are benign lesions originating in mesenchymal cells, comprised of a core of connective tissue covered by squamous epithelium. They are usually small and asymptomatic. When symptomatic or very large, they may cause bleeding, genital discomfort or the presence of a bulge in the vagina. In the last case, they may be mistaken for a genital prolapse. Although their physiopathology is still not clearly understood, the presence of hormonal receptors and the occurrence of FEPs during the use of hormone therapy or pregnancy suggest that changes in the stroma of these lesions may be induced by hormones. We report on the case of a patient who presented with a vaginal bulge and was referred to the urogynecology outpatient ward with a diagnosis of genital prolapse, which had actually a large fibroepithelial polyp on the posterior vaginal wall.

Extramammary Paget’s Disease Manifested by Intraepithelial Adenocarcinoma of the Vulva and Anus Combined with Invasive Adenocarcinoma of the Ampullary Part of the Rectum

The Object of the Study: The author of the given paper describes an unusual combination of two diseases: extramammary Paget’s disease manifested by intraepithelial adenocarcinoma of the vulva and anus combined with invasive adenocarcinoma of the ampullary part of the rectum and describes the atypical manifestations of these diseases. The Content: The content of this research paper includes a description of the patient, an analysis of the clinical picture, diagnostic methods and therapeutic interventions used, a report of the following disease, and the result of the presented case. The Result of the Research Work: The result of the research work is the analysis of a clinical case with two different tumors, where such a combination of tumors is rarely described in the literature. Moreover, no large specific sample with this combination of diseases is available. Patient Characteristics: The given case report describes a patient of the Palliative Care Unit of the Gerontology Clinic with a primary diagnosis of C20-rectal adenocarcinoma in the background of the anal canal, perineal skin Paget’s disease, stage IV. The presented complications of the patient’s primary diagnosis are multiple metastases in the liver;status post palliative chemotherapy;hepatomegaly;metastases to abdominal lymph nodes, inguinal lymph nodes;metastases at Th12, L4 level;pain syndrome. The presented above combination of diagnosed diseases is very rare. Applied Diagnostics: In October 2021, it was performed diagnostic manipulation: biopsy and the pathologist have provided a microscopic description. The first tissue fragment had a pronounced electrothermal lesion and the epithelial structures were not valuable. The second skin tissue fragment was covered with hyperplastic and acanthotic epithelium;its basal and middle layers contained multiple large cells proliferates extending into the medial epidermis, and the cytoplasm of these cells reacted positively with PAS (Periodic Acid Schiff reaction). It needs to be noted that the patient had previously had several years of biopsies from the perineal and anal epidermis, where Paget’s disease had also been diagnosed. The performed immunohistochemistry showed these cells to be CK20 positive, CK7 rare positive and p16 negative. The following pathohistological findings were made: morphological and immunohistochemical picture is consistent with Paget’s disease. According to the ICD-10, the patient was diagnosed with C51 malignant neoplasm of the female external genitalia. Using imaging diagnostics, it became clear that the patient’s rectal adenocarcinoma had progressed to metastatic stage with distant liver metastases in the background of anal canal, perineal skin Paget’s disease. Therapeutic Plan of the Patient: Based on the patient’s main diagnoses, the complications of the principal diagnosis, the patient’s overall severe condition, pain syndrome, age and comorbidities, palliative chemotherapy was approved as a therapeutic option in council of doctors. Monitoring and Outcome of the Patient: The patient’s general condition was becoming worse over time, and she was diagnosed with exitus latalis in December 2022. At that time, the patient was discharged from hospital and was on palliative care at home under the control of her family physician.

基于肺部CT生境模型预测表皮生长因子受体突变型肺腺癌脑转移

目的观察基于肺部CT生境模型预测表皮生长因子受体(EGFR)突变型肺腺癌脑转移(BM)的价值。方法回顾性分析198例EGFR突变型肺腺癌患者肺部平扫CT资料,按7∶3比例将其分为训练集(n=138)与测试集(n=60)并进一步划分BM亚组与非BM亚组。筛选训练集亚组间差异有统计学意义的变量构建逻辑回归(LR)临床模型;分别于瘤体及瘤体亚区提取特征,基于随机森林、高斯过程(GP)及支持向量机(SVM)算法构建影像组学及生境模型并筛选其中泛化能力最佳者,基于泛化能力最佳影像组学、生境模型及临床模型预测值构建LR联合模型;绘制受试者工作特征曲线,计算曲线下面积(AUC),评估各模型预测EGFR突变型肺腺癌BM的效能,以Spearman相关分析观察EGFR突变型肺腺癌Ki-67水平与生境特征的相关性。结果LR临床模型、GP影像组学模型、SVM生境模型及LR联合模型预测训练集EGFR突变型肺腺癌BM的AUC分别为0.700、0.726、0.801及0.834,在测试集分别为0.754、0.600、0.715及0.848。LR联合模型在训练集的AUC高于LR临床模型(P<0.001)、在测试集的AUC高于GP影像组学模型(P=0.010);其在训练集的效能相比GP影像组学模型及SVM生境模型均有显著正向提高[综合判别改善指数(IDI)=8.60%、8.55%,P均<0.001]。EGFR突变型肺腺癌Ki-67水平与生境图谱中的habitatmap_original_glszm_lalgle呈低度正相关(│rs│=0.201,P=0.004)。结论基于肺部CT生境模型可有效预测EGFR突变型肺腺癌BM。

胃肝样腺癌的CT特征

目的分析胃肝样腺癌的临床和CT特征,提高对本病的认识。资料与方法回顾性分析2012年9月—2023年4月苏州大学附属第一医院经病理证实的38例胃肝样腺癌患者的临床病理资料、实验室检查、CT资料,分析病灶大小、形态、密度、边界、强化方式、转移及侵犯等情况,总结其临床及CT特征。结果38例患者中,血清甲胎蛋白水平升高24例,免疫组化甲胎蛋白表达阳性32例。CT表现为胃壁增厚,门静脉期病变最大截面长径2.38~11.95cm,中位数为5.200(3.365,7.215)cm,23例伴溃疡,20例内见坏死,25例周围侵犯,14例出现肝脏转移,5例出现门静脉系统癌栓。结论胃肝样腺癌为罕见肿瘤,血清甲胎蛋白常增高,CT增强检查肿瘤常较大,可见坏死,渐进性或持续强化,易发生转移、侵犯门静脉,认识这些特征有助于提高诊断水平。

鼻咽部乳头状腺癌4例临床分析及文献复习

目的 探讨鼻咽部乳头状腺癌的临床特征和预后,以期为该疾病的诊断和治疗提供参考。方法 回顾性分析2020年12月~2022年2月青岛大学附属医院耳鼻咽喉头颈外科收治的4例经鼻内镜手术完全切除鼻咽部乳头状腺癌患者的临床资料,4例均为男性,年龄45~67岁,平均年龄55岁,分析总结鼻咽部乳头状腺癌患者的临床特征、治疗方式及预后。结果 4例鼻咽部乳头状腺癌患者中2例主要症状为后吸涕中带血,1例为单侧鼻塞,1例为双侧流涕,患者经组织活检病理明确诊断后均接受了鼻内镜手术,术中将肿瘤完全切除,术后随访16~30个月,复查内镜及MRI未见肿瘤复发。结论 鼻咽部乳头状腺癌临床上极为少见,经鼻内镜手术完全切除是治疗鼻咽部乳头状腺癌的有效方式,患者预后较好。

妊娠期宫颈癌临床误诊分析

目的探讨妊娠期宫颈癌临床误诊的原因及防范措施。方法回顾性分析2020年1月—2021年12月收治的曾有误诊经过的妊娠期宫颈癌3例临床资料。结果3例均因妊娠期阴道出血、腹痛或阴道分泌物异常就诊。1例考虑为先兆早产,剖宫产术后行MRI检查发现宫颈明显不规则增厚伴异常信号,经增厚组织病理检查确诊为宫颈低分化鳞状细胞癌(鳞癌);1例考虑为先兆流产,妇科检查发现宫颈有一赘生物,经宫颈活检确诊为宫颈中分化鳞癌;1例考虑为前置胎盘,剖宫产术后宫颈内口触及胎盘样组织,腹部超声示宫颈与宫体结合部占位性病变,病理活检示宫颈鳞癌。误诊时间2 d~4个月。3例确诊后予宫颈癌根治术联合术后放疗,随访半年情况良好。结论妊娠期宫颈癌临床少见,临床对以妊娠期出现不规则阴道出血、腹痛及分泌物异常增多就诊者提高警惕,以减少误诊。

859例胰腺占位性病变超声造影诊断的准确性分析

目的分析胰腺占位性病变超声造影诊断报告的准确性。方法回顾性收集2017年1月—2022年12月北京协和医院行胰腺占位超声造影检查且最终病理诊断明确的患者病历资料。以病理诊断为金标准,分析胰腺病变超声造影诊断的准确性,并具体分析各种病理类型胰腺占位性病变的超声造影误诊情况。结果共859例符合纳入和排除标准的患者入选本研究,其中男性489例(56.9%),女性370例(43.1%);年龄16~85岁,中位年龄60(53,66)岁。除难以应用良恶性进行分类的胰腺占位47例外,余812例纳入良恶性诊断准确性分析,结果显示,超声造影对胰腺恶性病变的诊断灵敏度为98.3%(95%CI:97.1%~99.1%),特异度为79.0%(95%CI:70.1%~86.4%),AUC为0.887(95%CI:0.863~0.908),阳性预测值为96.9%(95%CI:95.6%~97.9%),阴性预测值为87.4%(95%CI:79.6%~92.4%),阳性似然比为4.69(95%CI:3.24~6.80),阴性似然比为0.02(95%CI:0.01~0.04),超声造影检查诊断胰腺病变良恶性的诊断报告符合率为95.8%。859例胰腺占位病例中,超声造影误诊48例,误诊率为5.6%(48/859),其中包含未定性诊断病例7例(0.8%),而胰腺导管腺癌的诊断准确率高达98.8%。所有患者超声造影过程中均未发生不良反应事件。结论超声造影检查安全、有效,是评估各种胰腺病变微血管灌注的准确成像方法,对胰腺病变良恶性诊断,特别是胰腺导管腺癌的定性诊断具有良好的临床应用价值。

阑尾杯状细胞腺癌临床病理分析

目的分析阑尾杯状细胞腺癌临床病理特征。方法选取2020年1月至2024年3月于厦门大学附属第一医院杏林分院病理科诊治的11例阑尾杯状细胞腺癌患者作为研究对象,所有患者均接受免疫组化检查,4例行基因检测。收集病历资料,分析阑尾杯状细胞腺癌的临床病理特征。结果11例阑尾杯状细胞腺癌患者经临床检查发现,在大体外观上均呈阑尾炎样,其中1例阑尾管腔明显闭塞,1例阑尾末端明显扩张,1例阑尾浆膜面暗褐色伴穿孔且浆膜面粘连。所有研究对象有2例累及回盲部,1例同时累及结肠肠壁,3例侵犯系膜,1例累及十二指肠、结肠且伴有肝肾间隙种植转移,1例淋巴结转移,3例其他部位转移。从侵犯来说,4例侵犯至阑尾浆膜下层,3例侵犯至浆膜层,1例突破浆膜,3例其他部位转移;其中8例侵犯神经(+)。高级别10例,低级别1例。T3N0M0IIA1例,PT3N2aM1b 1例,Ⅳc期1例。免疫组化染色结果:3例CK7(+),7例CK20(+),8例CDX2(+),8例syn(+),4例CD56(+),5例CgA(+),Ki-67增值指数为20%~85%,平均38.75%。基因突变两例:一例为KRAS基因2号外显子检测到G13D突变,另一例为KRAS基因和NRAS基因3号外显子检测到Q61X突变。结论阑尾杯状细胞腺癌是一种恶性肿瘤,其在形态学及生物学行为的谱系较为宽泛,恶性程度和侵袭性较高,特别是高级别的侵袭性更高,且易伴随其他病变,临床症状缺乏特异性,临床医师及病理医师应提高对阑尾杯状细胞腺癌临床病理特征的认知,以避免漏诊和误诊的发生。

CT小肠造影对小肠肿瘤及肿瘤样病变的诊断与鉴别诊断的价值

目的探讨CT小肠造影(CTE)对小肠肿瘤及肿瘤样病变的诊断与鉴别诊断的价值。方法回顾性分析2015年1月—2022年12月于我院行CTE检查且手术病理检查证实为小肠肿瘤及肿瘤样病变的74例患者的影像学资料,根据病变性质分为恶性肿瘤组(54例)和非恶性肿瘤及肿瘤样病变组(20例),对两组患者的肿瘤长径、肠腔残留率及三期CT值(平扫、动脉期及静脉期)进行比较。结果恶性肿瘤组患者肿瘤长径、平扫CT值均显著高于非恶性肿瘤及肿瘤样病变组(Z=-3.512、-3.214,P<0.05),动脉期及静脉期CT值显著低于非恶性肿瘤及肿瘤样病变组(Z=-4.163、-3.475,P<0.05),肠腔残留率无显著差异(P>0.05);恶性肿瘤组中淋巴瘤患者的肿瘤长径和肠腔残留率显著高于腺癌患者(Z=-3.161、-4.853,P<0.05),动脉期及静脉期CT值显著低于腺癌患者(Z=-2.353、-2.161,P<0.05);剔除淋巴瘤患者后,两组患者的肿瘤长径、三期CT值有显著差异(Z=-3.571~-2.611,P<0.05),肠腔残留率仍无显著差异(P>0.05)。结论CTE能充分显示小肠肿瘤及肿瘤样病变的特征,可以为其诊断与鉴别诊断提供依据。