Jason N. Rogart

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BACKGROUND A significant number of self-expandable metal stents (SEMSs) placed to palliate malignant biliary obstruction will occlude. Few data exist as to what constitutes optimal management. OBJECTIVE Our purpose was to review the management and outcomes of patients with biliary SEMS occlusion. DESIGN AND SETTING Retrospective chart review at a single(More)
BACKGROUND There is no widely adopted, easily applied method for distinguishing between adenomatous and nonadenomatous polyps during real-time colonoscopy. OBJECTIVE To compare white light (WL) with narrow-band imaging (NBI) for the differentiation of colorectal polyps in vivo and to assess for a learning curve. DESIGN A prospective polyp series. (More)
BACKGROUND Adenoma detection rate (ADR) is increasingly used as a quality indicator for screening/surveillance colonoscopy. Recent investigations to identify factors that affect ADR have focused on the technical aspects of the procedure or the equipment. OBJECTIVE To assess whether gastroenterology (GI) fellow participation during colonoscopy affects ADR.(More)
GOALS To describe a multicenter experience using an endoscopic suturing device for management of gastrointestinal (GI) defects and stent anchorage. BACKGROUND Endoscopic closure of GI defects including perforations, fistulas, and anastomotic leaks as well as stent anchorage has improved with technological advances. An endoscopic suturing device(More)
BACKGROUND & AIMS The ability to observe cellular and subcellular detail during routine endoscopy is a major goal in the development of new endoscopic imaging techniques. Multiphoton microscopy, which relies on nonlinear infrared optical processes, has the potential to identify cellular details by excitation of endogenous fluorescent molecules. We examined(More)
BACKGROUND Characterization of pancreatic cysts by using EUS-FNA includes chemical and cytologic analysis. OBJECTIVE To evaluate whether material obtained from FNA of the cyst wall increases diagnostic yield. DESIGN Prospective series. SETTING Tertiary referral center. PATIENTS Consecutive patients with pancreatic cysts referred for EUS-FNA between(More)
BACKGROUND Pancreatic cysts are common, however, their diagnosis and classification remains a challenge despite advances in cross-sectional imaging and endoscopic ultrasound with fine needle aspiration (EUS-FNA). OBJECTIVE To determine the incremental yield of cytologic examination of material obtained from targeted fine needle aspiration ("puncture") of(More)
OBJECTIVE This study employed immunohistochemistry to investigate the pattern of type II collagen (CII) degradation in an acute injury model of osteoarthritis. It was hypothesized, based on previous studies of primary osteoarthritis (OA), that the worst areas of CII degradation would be located in the superficial and upper middle zones of the articular(More)