Clinicopathological characteristics of synchronous and metachronous gastric neoplasms after endoscopic submucosal dissection

BACKGROUND/AIMS: Endoscopic submucosal dissection (ESD) has become accepted as a minimally invasive treatment for gastric neoplasms. However, the development of synchronous or metachronous gastric lesions after endoscopic resection has become a major problem. We investigated the characteristics of multiple gastric neoplasms in patients with early gastric cancer (EGC) or gastric adenoma after ESD. METHODS: In total, 512 patients with EGC or gastric adenoma who had undergone ESD between January 2008 and December 2011 participated in this study. The incidence of and factors associated with synchronous and metachronous gastric tumors were investigated in this retrospective study. RESULTS: In total, 66 patients (12.9%) had synchronous lesions, and 13 patients (2.5%) had metachronous lesions. Older (> 65 years) subjects had an increased risk of multiple gastric neoplasms (p = 0.012). About two-thirds of the multiple lesions were similar in macroscopic and histological type to the primary lesions. The median interval from the initial lesions to the diagnosis of metachronous lesions was 31 months. The annual incidence rate of metachronous lesions was approximately 3%. CONCLUSIONS: We recommend careful follow-up in patients of advanced age (> 65 years) after initial ESD because multiple lesions could be detected in the remnant stomach. Annual surveillance might aid in the detection of metachronous lesions. Large-scale, multicenter, and longer prospective studies of appropriate surveillance programs are needed.

A Case of Pneumorrhachis and Pneumoscrotum Following Colon Endoscopic Submucosal Dissection

Endoscopic submucosal dissection has been a useful treatment of selected colorectal neoplasia cases. The incidence of perforation related to colorectal endoscopic submucosal dissection is 5-20%. However, while there have been numerous reports regarding retroperitoneal, mediastinal, pleural and subcutaneous emphysema after therapeutic colonoscopy, pneumoscrotum is a relatively rare manifestation of perforation associated with colorectal endoscopic submucosal dissection. In particular, pneumorrhachis, or air within the spinal cord, following therapeutic colonoscopy, is extremely rare. Herein, we report a conservatively treated perforation case as having pneumorrhachis, penumoscrotum, and pneumoperitoneum after colorectal endoscopic submucosal dissection.

A Case of an Anomalous Opening of the Common Bile Duct and Pancreatic Duct into the Duodenal Bulb, and the Patient Presented with Acute Cholangitis and Recurrent Duodenal Ulcer / 대한소화기내시경학회지

There are various congenital anomalies of the biliary system, but an ectopic opening of the common bile duct into the duodenal bulb is an extremely rare finding. Despite the recent improvement in the diagnosis and management of pancreatobiliary lesions, the general lack of knowledge and understanding about these variations is undoubtedly responsible for many of the problems that occur during the medical and surgical management of these lesions. We report here on a case of a 65-year-old man who had an ectopic opening of the common bile duct into the duodenal bulb, and this cause acute cholangitis with bile duct sludge, and also recurrent duodenal ulcer. In this case, we used abdomen CT, MRCP, duodenoscopy, EUS and ERCP for making the diagnosis. The cholangitis and duodenal ulcer was improved with medical therapy, and the patient was discharged without any surgical procedure. We report here on this unusual case and we include a review of the relevant medical literature.

A Case of Hypersensitivity Pneumonitis in an Automobile Paint Sprayer / 결핵및호흡기질환

Hypersensitivity pneumonitis (HP) is an immunologically-mediated disease resulting from repeated exposure to sensitizing agents, such as organic dusts or chemicals. Isocyanate is a volatile and highly reactive chemical that is extensively used in the manufacturing of automobiles, upholstery, and polyurethane foam. Occupational respiratory diseases associated with isocyanate, such as bronchial asthma, are well-known. It is thought that HP is one of the rare diseases induced by isocyanate with a very low frequency worldwide. We report a case of HP in an automobile painting sprayer which appeared to be associated with isocyanate.