Duodenal neuroendocrine tumors (NETs) are rare neoplasms. In this study, the medical records of 14 patients with duodenal NETs diagnosed at Chonnam National University Hospital from July 2001 to August 2011 were reviewed and analyzed retrospectively. Four patients were diagnosed in the first 5 years, and 10 patients were diagnosed in the latter 5 years of the study. Ten of 12 patients (83.3%) w...

Biopsies are necessary for the management of duodenal tumors. However, the most suitable targets for biopsy are not known. An 82-year-old woman who regularly visited our hospital for rheumatoid arthritis underwent abdominal ultrasonography. This screening revealed a dilated pancreatic duct. Magnetic resonance cholangiopancreatography was performed, and dilatation of the pancreatic duct was conf...

BACKGROUND AND AIMS The optimum diagnostic investigation for patients with acquired immunodeficiency syndrome (AIDS) and diarrhoea is not known. Often no pathogen is detected and it is unclear whether this is because pathogens are absent in some patients or the investigations used fail to detect them. The hypothesis that AIDS related diarrhoea is usually due to an infection, which can be identi...

BACKGROUND The 'immersion' technique during upper endoscopy allows the visualization of duodenal villi and the detection of total villous atrophy. AIM To evaluate the accuracy of the immersion technique in detecting total villous atrophy in suspected coeliac patients. The accuracy in diagnosing coeliac disease and the potential cost-sparing of a biopsy-avoiding approach, based on selection of...

Metastatic tumors of the duodenal papilla (ampulla of Vater) are rare. The images here are from a middle-aged gentleman with progressive cholestatic jaundice and recurrent cholangitis, with a past history of nephrectomy for renal cell carcinoma (RCC) 6 years earlier. Endoscopy revealed a bulky duodenal papilla, and the biopsy showed features consistent with RCC (Figs. 1 and 2). Metastatic tumor...

BACKGROUND Studies have demonstrated that villous atrophy in celiac disease is patchy and have suggested that duodenal bulb biopsies aid in diagnosis. OBJECTIVE To determine the role of the addition of duodenal bulb biopsies to distal duodenum (D2) biopsies in the diagnosis of celiac disease. DESIGN Prospective, case-control study. SETTING Tertiary referral hospital. PATIENTS Patients u...

A 21-year-old man developed nausea and weight loss 2 months after undergoing allogenic hematopoietic stem cell transplantation for treatment of acute myeloid leukemia. He was referred to gastrointestinal endoscopy for a duodenal biopsy, which is a procedure commonly used to confirm the diagnosis of acute graft-versus-host disease (GvHD) [1]. His coagulation test results were within the normal r...