Expression of annexin A1 in esophageal and esophagogastric junction adenocarcinomas: association with poor outcome.

PURPOSE: Annexin A1 (ANXA1) is a calcium-binding protein involved in arachidonic acid metabolism and epidermal growth factor receptor tyrosine kinase pathway. ANXA1 has been implicated in early squamous cell carcinogenesis of esophagus and correlates with degree of tumor differentiation. However, the role of ANXA1 in esophageal adenocarcinoma is unclear. Our goal was to evaluate ANXA1 expression and determine its prognostic significance in adenocarcinoma of the esophagus and esophagogastric junction. EXPERIMENTAL DESIGN: This study included 104 consecutive patients with primary resected esophageal and esophagogastric junction adenocarcinomas (11 stage I, 24 stage II, 53 stage III, and 16 stage IV). ANXA1 protein expression in each tumor was assessed by immunohistochemical staining of tissue microarrays. ANAX1 expression level was classified as high (>/=25% of tumor cells with cytoplasmic staining), low (<25% of tumor cells with cytoplasmic staining), or negative; and was correlated with clinicopathologic features and patients' outcomes. RESULTS: High ANXA1 expression was present in 39% (41 of 104) of tumors and was associated with higher pathologic T stage (P = 0.03) and distant metastasis (P = 0.04). High ANXA1 expression correlated with increased recurrence rate (P = 0.004) and decreased overall survival (P = 0.003) in univariate analysis. In multivariate analysis, ANXA1 expression and pN stage significantly correlated with recurrence rate (P = 0.008 and P < 0.001, respectively) and overall survival (P = 0.02 and P < 0.001, respectively) independent of T stage. CONCLUSION: Our results indicate that high ANXA1 expression is frequent in esophageal and esophagogastric junction adenocarcinomas, correlates with more advanced pathologic T stage and the presence of distant metastasis, and is an independent prognostic factor for patient survival.     

K-ras mutation, p53 overexpression, and microsatellite instability in biliary tract cancers: a population-based study in China.

PURPOSE: The genetic alterations in biliary tract cancer and clinicopathological associations have not been studied in large population-based studies. Experimental Design: We evaluated genetic alterations such as K-ras mutation, p53 overexpression, microsatellite instability (MSI), and alterations of the polyadenine tract present in the transforming growth factor beta receptor type II (TGFbetaRII) gene in 126 biliary tract cancers: 75 gallbladder cancers, 33 bile duct cancers, and 18 ampullary cancers. These genetic alterations were compared with patient demographics and clinicopathological characteristics of the tumors. RESULTS: Mutation of the K-ras gene was present in 18 of 126 (14.3%) biliary tract cancers. K-ras mutation was present in 11 of 18 (61.1%) ampullary cancers, 5 of 33 (15.2%) bile duct cancers, and 2 of 75 (2.7%) gallbladder cancers (P = 0.000001). The mean survival of patients who had bile duct carcinomas with K-ras mutation was 3.0 +/- 2.2 months compared with 15.5 +/- 12.5 months for those without mutation (P = 0.03) but was not different for other tumor sites. p53 overexpression was present in 34 of 123 (27.6%) cancers. MSI-high (allelic shifts in 40% or more loci or alteration of the TGFbetaRII gene) was present in 4 of 126 (3.2%) biliary tract cancers without hereditary nonpolyposis colorectal cancer. MSI-high was more common in mucinous adenocarcinomas (P = 0.006) and in patients with early age of onset of cancer (P = 0.04). CONCLUSIONS: The genetic alterations in biliary tract cancers are dependent on the tumor subsite, histology, and age of onset and are associated with prognosis.     

Unusual presentations in myositis ossificans progressiva. A case report

Myositis ossificans progressiva is a rare connective tissue disorder. We present here a case of myositis ossificans progressiva with some unusual presentations and associated congenital skeletal anomalies that are reported very infrequently in the literature. The case report highlights the importance of early diagnosis in a case of rapidly progressive myositis ossificans progressiva.     

Medical ethics in surgical wards: knowledge, attitude and practice of surgical team members in Karachi

A survey was undertaken to assess the knowledge, attitude and practice of medical ethics among surgical residents and interns in three teaching hospitals of Karachi, Pakistan. 101 out of 120 completed responses were included in the study. Fifty-one respondents had heard about the Code of Ethics formulated by the Pakistan Medical and Dental Council. Forty-four had read the code. Seven had no knowledge about it. Forty-seven reported taking consent for procedures. Forty-two respondents gave correct answers on questions of confidentiality and knowledge of law pertaining to trauma victims. Only 11 reported having been taught ethics as students. Four did not feel the need of its teaching at an undergraduate level. Doctors graduating within the last 10 years gave fewer correct answers than those graduating earlier. Knowledge of medical ethics and its application on the surgical floors is extremely poor. The survey results support the view that medical ethics should be part of the undergraduate medical curriculum.     

上海市胆道癌诊治情况的调查和分析

目的评估上海市胆道癌的诊治情况。方法对上海市区1997年6月至2001年5月4年间年龄在35～74岁的658例胆道癌新病例进行流行病学调查,对收集到的390例胆囊癌、195例胆管癌和73例壶腹癌的临床资料进行分析。结果资料显示,胆道癌好发于老年人;胆囊癌男女之比为1：2．61;胆管癌和壶腹癌则男性略多于女性。胆囊癌、胆管癌和壶腹癌分别有68．5％、43．1％和22．4％的患者合并胆结石。胆囊癌的B超诊断准确率为63．1％,意外胆囊癌占20％,ⅣA和IVB期胆囊癌占43．6％。胆管癌和壶腹癌的误诊率较高,分别为19．1％和47、1％,且就诊时大多数患者已出现黄疸。69例(18．2％)胆囊癌、50例(25．6％)胆管癌和54例(74％)壶腹癌行根治性切除术,术后1、3、5年生存率分别为58．5％、42．8％、40．7％,58％、28．3％、11．1％和81．5％、39．2％、26．9％。79例胆管癌行姑息性引流术,大多数患者在术后1年内死亡。38例胆管癌植入金属内支架或塑料内支撑管,平均生存期约7个月。结论胆道癌的早期诊断仍较困难;应重视胆囊癌手术方法的规范化;怀疑胆管癌而无手术禁忌证宜手术探查;壶腹癌宜行胰十二指肠切除术。     

American Society of Diagnostic and Interventional Nephrology Section Editor: Stephen Ash: Does Catheter Insertion by Nephrologists Improve Peritoneal Dialysis Utilization? A Multicenter Analysis

In contrast to hemodialysis (HD), peritoneal dialysis (PD) remains an underutilized form of renal replacement therapy in the United States. Although a variety of factors have been deemed responsible, timely insertion of a PD catheter may also be a contributory factor. We conducted a multicenter analysis to examine whether the establishment of a program for PD catheter insertion by nephrologists has a positive impact on the growth in the number of patients using PD. Data for catheter insertion performed by nephrologists were collected from three centers. Any change in the prevalent PD population at each respective center was compared to the number of PD patients during the period having the traditional surgical approach. Nephrologists at the three centers used the peritoneoscopic technique and performed catheter insertion under local anesthesia. In center 1, the PD population remained stable at between 38 and 45 patients (approximately 16% of the total end-stage renal disease [ESRD] population) from 1993 to 2001. Nephrologists initiated a program for PD catheter insertion in 2001. The number of PD patients has increased to 101 (32% of the ESRD population). In center 2, the PD population remained stable at between 70 and 78 patients (approximately 17%) between 1988 and 1990. Catheter insertion by interventional nephrologists began in 1991. The number of PD patients has increased to 125 (22%). In center 3, the PD population remained at 20-30 patients (approximately 18%) between 1988 and 1991. Catheter placement by nephrologists was initiated in 1991. The number of PD patients increased to 97 (27%). Catheter insertion by interventional nephrologists was suspended in 2001. The number of PD patients has gradually declined to 25 (6%). This study suggests that catheter insertion by the nephrologist can have a positive impact on the utilization of PD.