Much of the flat or biopsy-only detected dysplasia in inflammatory bowel disease (IBD) that had historically warranted a colectomy can now be shown to be circumscribed lesions with dye-spray or advanced endoscopic imaging. These lesions are therefore amenable to endoscopic excision with close endoscopic follow-up, though are technically very challenging. This review discusses preresection asses...

Neoplastic lesions of the large intestine are increasing in Japan in conjunction with the changes in the dietary life of the population. Exact diagnosis of the diseases of the large intestine are still being debated. However, recent advances in diagnostic imaging provide improved diagnosis of neoplastic lesions of the large intestine without undue stress on the patient. In this paper, recent di...

BACKGROUND/AIMS To assess the therapeutic outcomes of endoscopic resection (ER) of early gastric cancer (EGC) with undifferentiated-type histology. METHODS Cases of ER of EGC with undifferentiated-type histology in the Korean endoscopic submucosal dissection (ESD) registry database were identified and reviewed. The immediate outcomes, including en bloc resection, complete resection, and curat...

BACKGROUND/AIMS Narrow band imaging (NBI) is a new technique that uses optical filters for imaging of mucosal morphology. The aim of this study was to correlate findings of NBI with magnifying colonoscopy and histology for prediction of neoplastic colorectal lesion. METHODS Between September 2005 and December 2007, 107 colon polyps from 68 patients were detected by conventional colonoscopy an...

OBJECTIVE To describe the typical sonographic findings and clinical applications of color Doppler sono-hysterography and to correlate the vascularity of lesions seen on color Doppler sonohysterography to microvessel density and the presence of vessels greater than 0.5 mm. METHODS Color Doppler sonohysterography was performed on 25 women with abnormal uterine bleeding. The vascularity (number ...

Elastofibromatous change, also referred to as elastofibromatous polyp or elastofibroma, has been extremely rarely described in the gastrointestinal tract. This lesion is characterized histopathologically by an excessive accumulation of elastic fibers occasionally with a fibrous component involving the submucosa and/or muscularis mucosae of the gastrointestinal tract. Herein, we report four addi...

BACKGROUND/AIMS Endoscopic ultrasonography (EUS) is helpful for evaluating the depth of tumor invasion and lymph node metastasis of rectal neuroendocrine tumors (NETs). The aim of this study was to clarify the clinical impact of EUS for rectal NETs less than 10 mm in diameter. MATERIALS AND METHODS A total of 76 rectal NETs treated at our hospital between June 2006 and March 2013 were reviewe...

BACKGROUND AND AIMS Discrimination of gastric adenomas from adenocarcinomas by conventional endoscopy is difficult. Therefore, we evaluated the usefulness of magnifying endoscopy combined with narrow-band imaging for this differential diagnosis. METHODS Forty-nine consecutive gastric lesions were diagnosed as adenomas by conventional endoscopy with forceps biopsy and finally resected by endos...

BACKGROUND AND STUDY AIMS To assess experimentally endoscopic submucosal tunnel dissection (ESTD) as an alternative technique of endoscopic submucosal resection. PATIENTS AND METHODS This was a prospective, randomized, comparative experimental animal study carried out over a period of 9 months at the surgical research and teaching center of Aix-Marseille University, France. Virtual esophageal...

Gastric glomus tumors (GGTs) are rare mesenchymal tumors of the gastrointestinal tract originating in the neuromyoarterial glomus [1] and accounting for 1% of gastrointestinal stromal tumors (GISTs). GGTs are generally considered to be clinically benign [2], but malignant behavior cannot be excluded [3,4]. They present as submucosal masses that project into the lumen or out onto the serosa [5] ...