Squamous Cell Carcinoma and Adenocarcinoma of the Esophagus–Di?erences in Etiology, Epidemiology and Prevention

In Germany, esophageal carcinoma is one of the ten most frequent causes of death. Normally the disease is found in men over the age of 50. Although squamous cell carcinoma (SCC) of the esophagus has been more commonly diagnosed over the past 30 years, there is increasing incidence of esophageal adenocarcinoma (AC) in Western industrialized countries. For SCC the known etiological risk factors are nicotine and alcohol abuse. For AC, they are moderate nicotine and alcohol consumption as well as gastro-esophageal re?ux and obesity.

Infrequent p53 gene mutation and expression of the cardia adenocarcinomas from a high-incidence area of Southwest China

INTRODUCTIONAdenocarcinomas of the cardia are the lesionsarising from the proximal stomach or within 3 cm ofthe gastroesophageal junction.These cancerstended to be advanced at the time of presentation,usually with poor prognosis.In recent decade,the incidence of adenocarcinoma of gastric eardiaand esophagus are increasing steadily,while therehas been a decrease in the proportion of the cancersarising from the distal stomach.The

Association of genotypes of rs671 within ALDH2 with risk for gastric cardia adenocarcinoma in the Chinese Han population in high-and low-incidence areas

Objective: This study aimed to determine if gastric cardia adenocarcinoma(GCA) risk was associated with the lys(A or *2) allele at the rs671(glu504lys) polymorphism within the aldehyde dehydrogenase 2(ALDH2) gene in a Chinese Han population. We also aimed to investigate ALDH2 genotypic distributions between subjects from high- and low-incidence areas for both GCA and esophageal squamous cell carcinoma(ESCC).Methods: We designed a case-control study including 2,686 patients with GCA and 3,675 control subjects from high- and lowincidence areas for both GCA and ESCC in China. Taq Man allele discrimination assay was used to genotype the rs671 polymorphism. χ~2 test and binary logistic regression analysis were used to estimate the odds ratios for the development of GCA,and multivariate ordinal logistic regression was used to analyze ALDH2 genotypic distributions among different groups.Results: Compared with ALDH2*1/*1 homozygotes, ALDH2*1/*2 and ALDH2*2/*2 carriers did not increase the risk for GCA in the Chinese Han population(P>0.05). Interestingly, the ratio of homozygous or heterozygous ALDH2 *2 carriers in highincidence areas for both GCA and ESCC was lower than that in low-incidence areas(P<0.001).Conclusions: Genotypes of rs671 at ALDH2 may not increase GCA susceptibility in Chinese Han populations. In addition, the ALDH2 genotypic distribution differs between Chinese Han populations from high- and low-incidence areas for both GCA and ESCC. Our findings may shed light on the possible genetic mechanism for the dramatic geographic differences of GCA occurrence in China.

The expression of c-src gene in the carcinogenesis process of human cardia adenocarcinoma

AIM To investigate the activation, expression of c src gene and its role in the carcinogenetic process of human cardia adenocarcinoma (CA). METHODS Fifty six cases of CA, 34 cases of normal, 36 cases of protiferative epithelia adjacent to carcinoma, and 20 cases of lymph node metastases of CA were studied for PP60 c src , the expression product of c src gene immunohistochemically by using the specific monoclonal antibody, Mab327. RESULTS The positive rates of PP60 c src in the normal epithelia, protiferative epithelia, CA and lymph node metastases were 29 4% (10/*!34), 94 4% (34/*!36), 71 4% (40/*!56) and 60 0% (12/*!20) , respectively, among them, the differences of the positive rates were statistically significant ( P <0 01) . The expression levels of PP60 c src in CA and proliferative epithelia were significantly higher than that in the normal epithelia ( P <0 01) . The PP60 c src positive rates in the papillary, tubular, poorly differentiated and mucous adenocarcinoma were 75 0% (6/*!8) , 81 8% (18/*!22) , 50 0% (10/*!20) and 100 0% (6/*!6) , respectively, whereas those of tubular and mucous adenocarcinomas were significantly higher than those of papillary and poorly differentiated adenocarcinomas ( P <0 05) , and the PP60 c src expression levels of tubular and mucous adenocarcinomas were also significantly higher than those of papillary and poorly differentiated adenocarcinomas ( P <0 01) . CONCLUSION The activation and expression of c src gene are associated with the initiation and development of human CA; the protein amount of PP60 c src increased during the process of carcinogenesis; and PP60 c src expression is also related to lymph node metastases.

Characterization of E-cadherin expression in normal mucosa,dysplasia and adenocarcinoma of gastric cardia and its influence on prognosis

BACKGROUND Gastric cardia adenocarcinoma(GCA),which has been classified as type II adenocarcinoma of the esophagogastric junction in western countries,is of similar geographic distribution with esophageal squamous cell carcinoma in China,and even referred as"sister cancer"by Chinese oncologists.The molecular mechanism for GCA is largely unknown.Recent studies have shown that decreased expression of E-cadherin is associated with the invasion and metastasis of multiple cancers.However,the E-cadherin expression has not been well characterized in gastric cardia carcinogenesis and its effect on GCA prognosis.AIM To characterize E-cadherin expression in normal gastric cardia mucosa,dysplasia and GCA tissues,and its influence on prognosis for GCA.METHODS A total of 4561 patients with GCA were enrolled from our previously established GCA and esophageal cancer databases.The enrollment criteria included radical surgery for GCA,but without any radio-or chemo-therapy before operation.The GCA tissue from 4561 patients and matched adjacent normal epithelial tissue(n=208)and dysplasia lesions(n=156)were collected,and processed as tissue microarray for immunohistochemistry.The clinicopathological characteristics were retrieved from the medical records in hospital and follow-up was carried out through letter,telephone or home interview.E-cadherin protein expression was determined by two step immunohistochemistry.Kaplan–Meier and Cox regression analyses were used to correlate E-cadherin protein expression with survival of GCA patients.RESULTS Of the 4561 GCA patients,there were 3607 males with a mean age of 61.6±8.8 and 954 females with a mean age of 61.9±8.6 years,respectively.With the lesions progressed from normal gastric cardia mucosa to dysplasia and GCA,the positive immunostaining rates for E-cadherin decreased significantly from 100%to 93.0%and 84.1%,respectively(R2=0.9948).Furthermore,E-cadherin positive immunostaining rate was significantly higher in patients at early stage(0 and I)than in those at late stage(II and III)(92.7%vs 83.7%,P=0.001).E-cadherin positive expression rate was significantly associated with degree of differentiation(P=0.001)and invasion depth(P<0.001).Multivariate analysis showed that the GCA patients with positive E-cadherin immunostaining had better survival than those with negative(P=0.026).It was noteworthy that E-cadherin positive expression rate was similar in patients with positive and negative lymph node metastasis.However,in patients with negative lymph node metastasis,those with positive expression of E-cadherin had better survival than those with negative expression(P=0.036).Similarly,in patients with late stage GCA,those with positive expression of E-cadherin had better survival than those with negative expression(P=0.011).CONCLUSION E-cadherin expression may be involved in gastric cardia carcinogenesis and low expression of E-cadherin may be a promising early biomarker and overall survival predictor for GCA.

Comparison of transthoracic and transabdominal surgical approaches for the treatment of adenocarcinoma of the cardia

Background and Objective: Transthoracic and transabdominal approaches are commonly used for the surgical treatment of adenocarcinoma of the cardia. Which approach is better has been controversial for quite a long time. Our study aimed to compare the surgical trauma, range of lymph node dissection, and the prognosis of the transthoracic and transabdominal approaches for the treatment of adenocarcinoma of the cardia. Methods: The medical records of 331 patients with adenocarcinoma of the cardia treated in our hospital between 1994 and 2003 were analyzed. Of the 331 patients, 284 underwent operation via transthoracic approach and 47 via transabdominal approach. Surgery-related status, postoperative complications, range of removed lymph nodes and prognosis of the two groups were compared. Results: There was no significant difference in surgery-related status and postoperative complications between the two groups (P >0.05). The mean number of removed lymph nodes from the thoracic cavity was much higher in transthoracic group than in transabdominal group (P < 0.001), while that from the abdominal cavity was similar in both groups (P = 0.404). The thoracic lymph node metastasis rate was 18.8% in transthoracic group and 13.3% in transabdominal group. The median survival time was 29 months in transthoracic group and 28 months in transabdominal group, and the 5-year survival rates were 34.9% and 40.1% (P= 0.599). Conclusions: For the surgical treatment of adenocarcinoma of the cardia, the surgical trauma of the transthoracic approach is similar with that of transabdominal approach. The transthoracic approach has the advantage in thoracic lymph node dissection. The two approaches have no obvious effect on the prognosis.

Variant TP53BP1 rs560191 G>C is associated with risk of gastric cardia adenocarcinoma in a Chinese Han population

Objective： To investigate the association between gastric cardia adenocarcinoma （GCA） and ten functional single nueleotide polymorphisms （SNPs）, including TPY3BPI rs560191 G〉C, CASP8 rs1035142 G〉T, CASP7 rs3127075 G〉C, CASP7 rs7907519 C〉A, and six C1 orf 10/CRNN variants. We performed a hospital- based case-control study to evaluate the genetic effects of these SNPs. Methods： Two hundred and forty-three GCA cases and 476 controls were enrolled in this study. A custom- by-design 48-Plex SNPscanTM Kit was used to determine their genotypes. Results： When the TP^3BP1 rs560191 GG homozygote genotype was used as the reference group, the GC genotype was associated with a significantly increased risk of GCA. The CC genotype was not associated with the risk of GCA compared with the GG genotype. None of the CASP8 rs1035142 G〉T, CASP7 rs3127075 G〉C, CASP7 rs7907519 C〉A or the six ClorflO/CRNN polymorphisms showed a significant difference in genotype distributions between the cases and the controls. Conciusions： The results demonstrated that the functional polymorphism TP53BPI rs560191 G〉C might contribute to GCA susceptibility. However, the statistical power of our study was limited. Large, well- designed studies and further functional investigations are needed to confirm our findings.

Gastric cardia adenocarcinoma in Taiwan Residents men:Positive associations due to selection bias

The factors associated with an increase in gastric cardia adenocarcinoma are poorly understood.Environmental factors such as Helicobacter pylori(H.pylori) infection and diet have been hypothesized to play a role in the recently increased risk of this disease,but additional studies are needed.In conducting studies to establish the relationship between potential risk factors and gastric cardia adenocarcinoma,it is necessary to carefully consider the role of bias.In a recently published study,the reported associations between H.pylori as well as post-meal physical exertion and gastric cardia adenocarcinoma may have been greatly influenced by selection bias.

信迪利单抗联合奥沙利铂和替吉奥治疗贲门腺癌致免疫性心肌炎并文献分析

报道1例64岁女性患者因贲门腺癌行信迪利单抗(200 mg,d1)+奥沙利铂(200 mg,d1)+替吉奥(60 mg,bid,d1~14)的3周治疗方案。患者在第2周期治疗的第7天出现后背疼痛,心肌损伤标志物升高,心电图Ⅲ、aVF导联可见异常Q波,T波低平。经冠脉CT检查后排除冠状动脉粥样硬化所致冠心病,诊断为免疫性心肌炎。停用抗肿瘤药物,给予甲泼尼龙治疗9 d后症状缓解,心肌损伤标志物明显下降。免疫性心肌炎是信迪利单抗罕见且严重的不良反应,临床应用信迪利单抗时应密切监测心肌损伤标志物的变化和患者的症状、体征。

Human papillomavirus DNA and P16～(INK4A) expression in concurrent esophageal and gastric cardia cancers

AIM:To investigate the relationship between human papillomavirus (HPV) infection and concurrent esophagus and gastric cardia cancer from the same patient (CC) and examine the significance of P16 INK4A protein expression.METHODS:Polymerase chain reaction was used to detect the presence of HPV type16 (HPV16).The expression of P16 INK4A protein was detected using immunohistochemistry.RESULTS:Among the CC specimens,HPV16-DNA was found in eight cases of esophageal squamous cell carcinoma (ESCC) and five cases of gastric cardia adenocarcinoma (GCA),respectively (47% vs 29%),and two of both ESCC and GCA.P16 INK4A was highly expressed in both ESCC and GCA.In the HPV-associated positive CC,higher P16 INK4A expression was observed in the GCA than in the ESCC (75% vs 25%,P < 0.05).CONCLUSION:HPV16 as a correlated risk factor may play an important role in the development of ESCC and GCA.P16 INK4A may be a screening index in the HPVassociated carcinoma of gastric cardia.

Coexistence of gastrointestinal stromal tumor, esophageal and gastric cardia carcinomas

Gastric gastrointestinal stromal tumor (GIST), esophageal squamous cell carcinoma and gastric cardia adenocarcinoma are distinct neoplasms originating from different cell layers; therefore, simultaneous development of such carcinomas is relatively rare. Auxiliary examinations revealed coexistence of esophageal and gastric cardia carcinoma with lymph node metastasis in a 77-year-old man. Intraoperatively, an extraluminal tumor (about 6.0 cm × 5.0 cm × 6.0 cm) at the posterior wall of the gastric body, a tumor (about 2.5 cm × 2.0 cm) in the lower esophagus, and an infiltrative and stenosing tumor (about 1.0 cm × 2.0 cm) in the gastric cardia were detected. Wedge resection for extraluminal gastric tumor, radical esophagectomy for lower esophageal tumor, and cardiac resection with gastroesophageal (supra-aortic arch anastomoses) were performed. Postoperative histological examination showed synchronous occurrence of gastric GIST, esophageal squamous cell carcinoma, and gastric cardia adenocarcinoma. Furthermore, immunohistochemistry indicated strong staining for c-Kit/CD117, Dog-1, Ki-67 and smooth muscle, while expression of S-100 and CD34 was negative.

Pathological factors affecting gastric adenocarcinoma survival in a Caribbean population from 2000-2010

AIM: To investigate pathological factors related to long term patient survival post surgical management of gas-tric adenocarcinoma in a Caribbean population.METHODS: This is a retrospective, observational study of all patients treated surgically for gastric adenocarci-noma from January 1st 2000 to December 31 st 2010 at The University Hospital of the West Indies, an urban Jamaican hospital. Pathological reports of all gastrecto-my specimens post gastric cancer resection during the specified interval were accessed. Patients with a final diagnosis other than adenocarcinoma, as well as pa-tients having undergone surgery at an external institu-tion were excluded. The clinical records of the selected cohort were reviewed. The following variables were analysed; patient gender, patient age, the number of gastrectomies previous performed by the lead surgeon, the gross anatomical location and appearance of the tumour, the histological appearance of the tumour, infil-tration of the tumour into stomach wall and surround-ing structures, presence of Helicobacter pylori and the presence of gastritis. Patient status as dead vs alive was documented for the end of the interval. The effect of the aforementioned factors on patient survival were analysed using Logrank tests, Cox regression models, Ranksum tests, Kruskal-Wallis tests and Kaplan-Meier curves.RESULTS: A total of 79 patients, 36 males and 43 fe-males, were included. Their median age was 67 years(range 36-86 years). Median survival time from surgery was 70 mo with 40.5% of patients dying before the termination date of the study. Tumours ranged from 0.8 cm in size to encompassing the entire stomach speci-men, with a median tumour size of 6 cm. The median number of nodes removed at surgery was 8 with a maximum of 28. The median number of positive lymph nodes found was 2, with a range of 0 to 22. Patients' median survival time was approximately 70 mo, with 40.5% of the patients in this cohort dying before the terminal date. An increase in the incidence of cardiac tumours was noted compared to the previous 10 year interval(7.9% to 9.1%). Patients who had serosal involvement of the tumour did have a significantly shorter survival than those who did not(P = 0.017). A significant increase in the hazard ratio(HR), 2.424, for patients with circumferential tumours was found(P = 0.044). Via Kaplan-Meier estimates, the presence of venous infiltration as well as involvement of the circum-ferential resection margin were found to be poor prog-nostic markers, decreasing survival at 50 mo by 46.2% and 36.3% respectively. The increased HR for venous infiltration, 2.424, trended toward significant(P = 0.055) Age, size of tumour, number of positive nodes found and total number of lymph nodes removed were not useful predictors of survival. It is noted that the results were mostly negative, that is many tumour character-istics did not indicate any evidence of affecting patient survival. The current sample, with 30 observed events(deaths), would have about 30% power to detect a HR of 2.5.CONCLUSION: This study mirrors pathological factors used for gastric cancer prognostication in other popu-lations. As evaluation continues, a larger cohort will strengthen the significance of observed trends.

Esophagogastric junctional neuroendocrine tumor with adenocarcinoma:A case report

BACKGROUND At present,cases of esophageal neuroendocrine tumors combined with cardia adenocarcinoma are extremely rare worldwide,and there are no clinical reports.Herein,we describe such a case for clinical reference.CASE SUMMARY The presence of cardia cancer and esophageal neuroendocrine tumors in a single patient has not yet been reported.The patient in this case underwent prompt endoscopic treatment and additional surgical resection.Pathology revealed the following:The distance between the cardia cancer and the esophageal neuroendocrine tumors was small,approximately 3 mm.Vascular invasion was observed.The esophageal neuroendocrine tumor was determined to be grade G3.According to the treatment guidelines,after the patient received an explanation of their condition,additional surgical procedures were provided in a timely manner.Early detection and early treatment can successfully prolong survival and improve the quality of life of patients.CONCLUSION Early detection and early treatment can successfully prolong survival and improve the quality of life of such patients.

贲门腺癌组织中淋巴细胞活化基因-3的表达及临床意义

目的探讨贲门腺癌(gastric cardia adenocarcinoma,GCA)组织中淋巴细胞活化基因-3(lymphocyte activation gene-3,LAG-3)的表达与临床病理特征和生存期的关系。方法收集2015年1月至2020年12月濮阳市人民医院101例术后病理证实为GCA患者的病理组织蜡块及临床资料,随访其生存状况,采用免疫组织化学方法检测LAG-3的表达情况,采用Kaplan-Meier法及log-rank检验对数据进行分析,并绘制生存曲线。结果LAG-3主要定位在GCA组织的肿瘤浸润淋巴细胞(tumor infiltrating lymphocytes,TILs)的细胞质和细胞膜上,阳性表达率为53.5%(54/101),LAG-3表达与年龄、性别、大体分型、分化程度、肿瘤直径、浸润深度、淋巴结转移情况、TNM分期无明显相关性(P>0.05);LAG-3阳性组较LAG-3阴性组生存期短(P=0.0099)。结论LAG-3的表达与GCA的临床病理特征之间无明显关联,其阳性表达患者预后差。

食管癌与贲门癌患者的临床症状对比分析

目的比较食管癌和贲门癌患者常见的临床症状类型与临床病理特点,分析两者临床症状的相似性。方法从《省部共建食管癌防治国家重点实验室临床诊疗、病理和随访信息数据库》,收集2019年11月至2020年1月间经胃镜联合病理活检确诊并进行根治性手术的食管癌患者380例、贲门癌患者177例,对两组患者的临床症状等信息进行整理和统计学比较,分析两种肿瘤患者的临床症状及病理特点。结果食管癌和贲门癌患者的临床症状可规范分类为13种,常见的依次为吞咽不适(68.04%)、腹部不适(11.49%)、消化道出血(3.77%)、胃食管反流(3.59%)等,其中吞咽不适、腹部不适、消瘦乏力3种临床症状在两类患者中的分布差异有统计学意义(P<0.05),但吞咽/腹部不适相关症状在两组患者之间无显著性差异(P>0.05)。胃食管反流和上消化道出血症状都多见于中晚期食管癌和贲门癌(P>0.05)。无症状食管癌患者多为早期,而无症状贲门癌患者以中晚期多见(P<0.01)。结论食管癌和贲门癌在流行病学特征、临床症状上表现出密切的联系,临床症状具有明显的相似性。

食管胃结合部腺癌的预后分析

背景与目的:食管胃结合部腺癌(adenocarcinoma of gastroesophageal junction,AGEJ)的发病率逐步升高,且由于其解剖部位特殊,预后相对较差。本研究旨在总结复旦大学附属肿瘤医院外科治疗的AGEJ的临床资料,以探讨影响AGEJ术后生存的相关预后因素。方法:回顾性分析1996年1月1日-2005年9月31日间复旦大学附属肿瘤医院腹部外科收治的749例可切除的AGEJ病例的临床和病例资料,并对其进行随访。AJCC分期:Ⅰ期90例(12.0%),Ⅱ期165例(22.0%),Ⅲ期379例(50.6%),Ⅳ期115例(15.4%)。手术根治率89.5%,R0根治切除率87.4%。生存率计算及生存曲线绘制采用Kaplan-Meier法,单因素预后分析采用Log-rank检验,多因素预后分析采用Cox比例风险模型。结果:本组病例的总体5年生存率为38.5%,中位生存期为38个月。手术性质、淋巴结清扫范围、胃体切除范围、联合胰脾切除、大体标本类型、肿瘤累及贲门、肿瘤部位、肿瘤最大径、分化程度、脉管侵犯、淋巴结阳性比、阳性切缘、肿瘤残留分级以及TNM分期在单因素分析中显示对预后有显著影响。胸腹联合手术与单纯进腹手术预后差异无统计学意义(38.3%vs40.1,P=0.850)。多因素分析结果显示肿瘤残留分级、脉管累及、淋巴结阳性比及TNM分期是独立的预后因素。结论:AGEJ的外科治疗中,手术入路的选择不影响患者的预后。手术应行标准D2淋巴清扫,并达到R0根治切除。联合胰脾切除疗效有待临床验证。病理检查中,应尽可能检出16枚以上的淋巴结,以保证分期的准确性。

Claudin 3在食管腺癌和贲门腺癌的表达和意义

目的探讨Claudin3在食管腺癌和贲门腺癌的表达及意义。方法分别采用RT-PCR及Western blot检测16例食管腺癌、20例食管鳞癌、15例弥漫型贲门腺癌、25例肠型贲门腺癌、15例正常食管黏膜和15例正常贲门黏膜组织中Claudin 3 mRNA及蛋白表达。结果与正常对照组和食管鳞癌、贲门弥漫型腺癌组相比,食管腺癌和贲门肠化型腺癌组织中Claudin 3 mRNA及蛋白表达显著增高(P<0.01);食管鳞癌组、贲门弥漫型癌组Claudin 3 mRNA及蛋白表达与正常对照组无明显变化(P>0.05)。结论Claudin 3与食管腺癌和贲门肠化型腺癌发生有关。

河南贲门癌高发区贲门癌发生部位分析

目的：分析河南贲门癌高发区贲门癌发生部位及其年龄和性别分布特征,加深对贲门癌,食管/贲门交界部腺癌以及食管下段原发性腺癌分类和分型的认识。方法：以食管鳞状上皮和贲门柱状上皮交界部的齿状线为参照,将贲门癌区分为4种类型A型肿瘤全部位于齿状线下方;B型肿瘤2/3位于齿状线下方;C型肿瘤1/2位于齿状线下方;D型肿瘤1/3位于齿状线下方。分析比较河南贲门癌高发区595例贲门癌患者肿瘤发生部位的分布特征。结果：595例贲门癌患者中,男女性比例为3.5∶1。男性和女性贲门癌发生部位均以A型和B型为主（〉95%）,高于C型和D型（P〈0.05）。青年贲门癌患者以A型为主（78%）,高于中老年患者（P〈0.05）。除男性和女性30-年龄段A型多于B型（P〈0.05）,女性60-年龄段B型多于A型（P〈0.05）外,其余男性和女性各年龄段A型和B型间差异均无统计学意义（P〉0.05）。结论：河南贲门癌高发区贲门癌95%以上属A型和B型,主要发生于解剖学贲门部位,与西方国家食管/贲门交界部腺癌发生部位明显不同,建议将贲门癌作为一种独立的疾病进行研究。

贲门癌癌旁和无症状人群贲门黏膜活检组织肠上皮化生检测

目的:探讨贲门癌癌旁组织及无症状人群贲门黏膜活检组织肠上皮化生(IM)的分布特征。方法:采用艾显蓝-雪夫(AB-PAS)和高铁二胺-艾显兰(HID-AB)黏液组织化学染色法,对河南贲门癌高发区70例贲门癌癌旁组织和320例无症状人群贲门黏膜活检组织中的IM进行检测。结果:贲门癌癌旁组织的IM检出率38.5%(27/70),高于无症状人群贲门黏膜活检组织中的IM检出率4.4%(14/320)(χ2=71.3945,P<0.01)。贲门癌癌旁组织IM不完全型占92.6%(25/27),完全型IM占7.4%(2/27);无症状人群贲门黏膜的IM不完全型占7.1%(1/14),完全型IM占92.9%(13/14);2者比较,差异有统计学意义(χ2=29.0157,P<0.01)。贲门癌旁组织的IM大肠型占59.2%(16/27),小肠型占40.8%(11/27);无症状人群贲门黏膜的IM小肠型占92.9%(13/14),大肠型占7.1%(1/14);2者比较,差异有统计学意义(χ2=10.3173,P<0.01)。结论:IM可能是河南贲门癌高发区贲门癌癌前病变的一种重要表现形式;不完全型和大肠型IM可能是贲门癌前病变的独特组织学类型。

食管癌高发区队列内镜筛查随访分析

目的:分析食管癌高发区大人群内镜加碘染色筛查敏感性和漏诊率。方法:根据2002年5月河北省磁县40～65岁2013例内镜队列筛查样本,通过以2006年1月～3月随访所证实发生的食管鳞癌、贲门腺癌和胃癌病例为数据计算敏感性和漏诊率。结果:在内镜筛查后的6个月～36个月中,随访证实新发生食管鳞癌2例,贲门腺癌4例,胃窦腺癌1例,其他癌6例,死因不详1例。失访11例,随访率99.4%。经计算内镜筛查食管鳞癌灵敏度97.1%,漏诊率2.9%;贲门腺癌分别为80.0%和20.0%。结论:食管癌高发区内镜加碘染色筛查,贲门癌的灵敏度低于食管癌。