Incomplete resection rate of cold snare polypectomy: a prospective single-arm observational study.

 Cold snare polypectomy (CSP) is considered to be safe for the removal of subcentimeter colorectal polyps. This study aimed to determine the rate of incomplete CSP resection for subcentimeter neoplastic polyps at our center.  Patients with small or diminutive adenomas (diameter 1 - 9 mm) were recruited to undergo CSP until no polyp was visible.

Scissor-type knife significantly improves self-completion rate of colorectal endoscopic submucosal dissection: Single-center prospective randomized trial.

Background And Aim: Colorectal endoscopic submucosal dissection (C-ESD) is recognized as a difficult procedure. Recently, scissors-type knives were launched to reduce the difficulty of C-ESD. The aim of this study was to evaluate the efficacy and safety of the combined use of a scissors-type knife and a needle-type knife with a water-jet function (WJ needle-knife) for C-ESD compared with using the WJ needle-knife alone.

Feasibility of cold snare polypectomy in Japan: A pilot study.

Aim: To investigate the feasibility of cold snare polypectomy (CSP) in Japan.

Methods: The outcomes of 234 non-pedunculated polyps smaller than 10 mm in 61 patients who underwent CSP in a Japanese referral center were retrospectively analyzed. The cold snare polypectomies were performed by nine endoscopists with no prior experience in CSP using an electrosurgical snare without electrocautery.

Long-term survival after endoscopic resection for early gastric cancer in the remnant stomach: comparison with radical surgery.

Background: Endoscopic resection (ER) has recently become standard treatment, even for early gastric cancer (EGC) in the remnant stomach. We aimed to compare long-term survival after ER versus radical surgery for EGC in the remnant stomach.

Methods: We retrospectively compared overall and cause-specific survival of patients who had undergone ER or radical surgery for EGC in the remnant stomach from 1998 to 2012.

Endoscopic optical diagnosis provides high diagnostic accuracy of esophageal squamous cell carcinoma.

Background: Recent technological advances have stimulated the development of endoscopic optical biopsy technologies. This study compared the accuracy of endoscopic diagnosis using magnifying narrow-band imaging (NBI) and histologic diagnosis of esophageal squamous lesions.

Methods: Patients at high risk for esophageal squamous cell carcinoma were examined with endoscopy and subsequent biopsy.

Diagnostic features of sessile serrated adenoma/polyps on magnifying narrow band imaging: a prospective study of diagnostic accuracy.

Background And Aims: The narrow band imaging classification system (NBI International Colorectal Endoscopic [NICE] classification) classifies colorectal polyps very accurately. However, sessile serrated adenoma/polyps (SSA/Ps) pathologically resembles hyperplastic polyp and has a possibility to be left in situ on NICE classification. The aim of this study was to establish and evaluate new simple diagnostic features for SSA/Ps using magnifying narrow band imaging (M-NBI).

Predictors of lymph node metastasis in T1 colorectal carcinoma: an immunophenotypic analysis of 265 patients.

Background: The appropriateness of endoscopic resection in patients with T1 colorectal carcinomas is unclear. Highly precise predictors of lymph node metastasis are required to optimize the outcomes of treatments for T1 colorectal carcinomas.

Objective: The purpose of this work was to identify predictors of lymph node metastasis by examining the clinicopathologic significance of immunophenotypes found in T1 colorectal carcinomas.

Pink-color sign in esophageal squamous neoplasia, and speculation regarding the underlying mechanism.

Aim: To investigate the reasons for the occurrence of the pink-color sign of iodine-unstained lesions.

Methods: In chromoendoscopy, the pink-color sign of iodine-unstained lesions is recognized as useful for the diagnosis of esophageal squamous cell carcinoma. Patients with superficial esophageal neoplasms treated by endoscopic resection were included in the study.

Long-term outcome and metastatic risk after endoscopic resection of superficial esophageal squamous cell carcinoma.

Objectives: Long-term outcomes after endoscopic resection (ER) provide important information for the treatment of esophageal carcinoma. This study aimed to investigate the rates of survival and metastasis after ER of esophageal carcinoma.

Methods: From 1995 to 2010, 570 patients with esophageal carcinoma were treated by ER.

Pathological factors related to lymph node metastasis of submucosally invasive gastric cancer: criteria for additional gastrectomy after endoscopic resection.

Background: There are currently no universally accepted indications and criteria for additional gastrectomy after endoscopic resection of submucosally invasive cancer. The purpose of the present study was to establish accurate indications and criteria for such additional gastrectomy on the basis of lymph node metastasis risk.

Methods: We investigated 130 submucosally invasive gastric cancers and analyzed the pathological risk factors for lymph node metastasis.

[One case that accompanied accessory papilla carcinoid for von Recklinghausen's disease].

A 45-year-old man: pointed out von Recklinghausen disease (following vR disease) in 18 years old. He had a checkup in a close inspection purpose of a duodenum tumor at our hospital. We diagnosis that the accessory papilla carcinoid, and Pancreas Divisum was doubted.