Although the majority of mesenchymal lesions of the gastrointestinal tract are neoplastic in nature, but nonneoplastic reactive processes may also involve the gastrointestinal tract and mesentery. Some more aggressive neoplasms located in same area, such as fibromatosis or gastrointestinal stromal  tumors  may  be  cause  of  diagnostic  confusion.  Reactive  nodular  fibrous  pseudo  tumor (RN...

Muir-Torre syndrome (MTS) is a rare genodermatosis, diagnosed by the presence of sebaceous neoplasms along with an internal malignancy, most commonly colorectal carcinomas. MTS is most commonly caused by microsatellite instabilities of the hMLH1 and hMSH2 mismatch repair genes, and is rarely caused by mutations of the hMSH6 gene. We describe the case of a 56-year-old male who presented with an ...

background: pancreatic neuroendocrine neoplasms (pnens) are increasing in the world. the annual incidence of pnets is nearly 0.25 per 100 000 population. 1-2% of pancreatic neoplasms are pnens. materials and methods: this article reviewed the available original and review literatures which had been published in persian and english in websites of google scholar, iran doc and pub med with keyword...

Cystic tumors of the pancreas are rare neoplasms. They are more frequently identified given the improvements in imaging techniques. Serous cystadenomas are the most common among cystic neoplasms of the pancreas. In this case report we present a patient who was incidentally found to have a cystic mass in the pancreas during an abdominal imaging done for unrelated reasons and was diagnosed as ser...

Gastro-intestinal stromal tumors (GISTs), as currently defined, represent the largest category of primary non epithelial neoplasms of the gastrointestinal tract. They arise from mesenchymal cells located in the wall of the organ and show a remarkable variability in their differentiation pathways. For this reason there is relevant degree of confusion in their interpretation. On the basis of immu...

UNLABELLED Teratomas are neoplasms that arise from pluripotent cells and can differentiate along one or more embryonic germ lines. Renal teratoma is an exceedingly rare condition. Teratomas commonly arise in the gonads, sacrococcygeal region, pineal gland, and retroperitoneum. They present mainly as an abdominal mass with few other symptoms. Majority of the tumors are benign, situated on the le...

BACKGROUND Minimally invasive surgery (MIS) is an accepted surgical technique for the treatment of a variety of benign diseases. Presently, the use of MIS in patients with cancer is progressing. However, the role of MIS in children with solid neoplasms is less clear than it is in adults. Although the use of diagnostic MIS to obtain biopsy specimens for pathology is accepted in paediatric surgic...

Department of Radiology and Center for Imaging Science & Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710, Korea Department of Radiology & Department of Surgery, Kangwon National University School of Medicine, Chuncheon 200-701, Kangwondo Department of Radiology, Korea University School of Medicine, Seoul 136-701, Korea Received October 30...

Cystic lesions originating from the gallbladder are very rare. Mucinous cystic neoplasms of liver and biliary system principally occur in liver, followed by extrahepatic system. Only a few case reports were reported primarily gallbladder. A 63-year-old woman was admitted to our hospital with complaints pain right upper abdomen, increasing after meals, abdominal discomfort. laparoscopic cholecys...