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BACKGROUND The behavior of early gastric cancer (EGC) with mixed-type histology (differentiated and undifferentiated) is incompletely understood. This study aimed to clarify the clinicopathological features of EGC with mixed-type histology in relation to lymph node (LN) metastasis. METHODS Clinicopathological data from 410 patients who underwent surgical(More)
BACKGROUND AND STUDY AIMS Unique anatomical features render endoscopic resection for rectal tumors extending to the dentate line (RTDL) technically challenging. The aim of this study was to evaluate the feasibility of endoscopic submucosal dissection (ESD) for RTDLs. PATIENTS AND METHODS This retrospective study compared ESD for RTDLs with proximal rectal(More)
Because of the low prevalence of non-ampullary duodenal epithelial tumors (NADETs), standardized clinical management of sporadic superficial NADETs, including diagnosis, treatment, and follow-up, has not yet been established. Retrospective studies have revealed certain endoscopic findings suggestive of malignancy. Duodenal adenoma with high-grade dysplasia(More)
BACKGROUND AND STUDY AIMS Little information exists regarding the optimal treatment of early gastric cancer (EGC) in a remnant stomach or gastric tube. The aim of this study was to assess the feasibility and clinical outcomes of endoscopic submucosal dissection (ESD) for EGC in a remnant stomach and gastric tube. PATIENTS AND METHODS Between September(More)
BACKGROUND With the widespread use of endoscopic submucosal dissection (ESD), more large early gastric cancers (EGC) have become candidates for endoscopic resection. A precise diagnosis of the extent of cancer is indispensable to obtain R0 resection. The aim of the present study was to clarify the factors related to lateral margin positivity for cancer in(More)
BACKGROUND Endoscopic dilation (ED) is used for the treatment of benign strictures caused by reflux esophagitis or anastomotic stenosis after esophagectomy. Esophageal stenosis is a major complication after endoscopic submucosal dissection (ESD) of large superficial esophageal cancer, but little is known regarding the incidence of complications of ED for(More)
BACKGROUND AND AIMS The technical difficulties inherent in endoscopic submucosal dissection (ESD) for colorectal neoplasms may result in the failure of en bloc resection or perforation. The aim of this retrospective study was to assess the predictors of en bloc resection failure or perforation by using preoperatively available factors. METHODS Between(More)
BACKGROUND Bleeding and perforation are two major complications of gastric endoscopic submucosal dissection (ESD). There are only a few reports concerning gastric obstruction related to ESD in the stomach. OBJECTIVE The aim of this study was to clarify the clinicopathological features of patients who experienced gastric obstruction after gastric ESD. (More)
BACKGROUND Previous reports on percutaneous endoscopic gastrostomy (PEG) for bowel decompression have included a relatively small number of patients and the details of post-procedural outcomes and complications are lacking. The aim of the present study was to evaluate the outcomes and safety of PEG for bowel decompression in a relatively large number of(More)
BACKGROUND Gastric stenosis is a major problem after endoscopic submucosal dissection (ESD) for large early gastric cancer, but little is known about the incidence of adverse events associated with endoscopic dilation (ED) for stenosis caused by gastric ESD. The aims of this study were to determine the incidence and risk of bleeding and perforation(More)