Extramedullary plasmacytomas are rare among plasma cell neoplasms and primary gastrointestinal plasmacytomas are even rarer and many of the cases are not detected until the disease advances. We reported a case of extramedullary plasmacytoma of stomach in a 46 yr old female who presented with complaints of dyspepsia and melaena. Upper gastrointestinal endoscopy revealed a nodule in the pylorus r...

headings – Wistar Rats. Tumor markers, biological. Stomach neoplasms. abstRact Background: The N-methyl-N-nitrosourea (MNU) is a direct acting carcinogen, inducing tumors in several species in a variety of organs, including stomach of rats. Treatment of MNU in the drinking water for 25-42 weeks selectively induced glandular gastric carcinoma in F344 rats and C3H mice. Aim: To establish an exper...

1Resident Radiologist, Instituto de Radiologia (INRAD), Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (HC-FMUSP), São Paulo, SP, Brazil 2Resident Gastroenterologist, Instituto da Criança, HC-FMUSP, São Paulo, SP, Brazil 3Resident Pathologist, HC-FMUSP, São Paulo, SP, Brazil 4PhD in Medicine from Universidade Federal de São Paulo. Head of the Service of Gastroenterology...

pulmonary adenocarcinoma is one of the major types of lung cancers in which metastasis is not uncommon. hereby, we report a case of pulmonary adenocarcinoma with multiple muscular, cutaneous, pancreatic and peritoneal metastases. actually, all these features occurring in one patient makes it an extraordinary case. a rare anatomic variation, double inferior vena cava (ivcs), was another rare man...

A gastric carcinoma with the endoscopic features resembling submucosal tumor (SMT) is rare, and reportedly account for only 0.1% to 0.63% of all resected gastric carcinomas. The preoperative diagnosis of SMT-like gastric carcinoma is challenging, and thus, diagnosis is usually made intraoperatively or postoperatively. Furthermore, mucinous adenocarcinoma is an uncommon histologic subtype of gas...

This report describes a rare case of adenocarcinoma arising from a gastric duplication cyst, with invasion to the stomach wall, in a 40 year old Japanese man. A cystic lesion was found between the stomach and the spleen. The cyst had a well circumscribed smooth muscle layer, corresponding to the muscularis propria of the stomach and the mucosa of the alimentary tract. A well differentiated aden...

BACKGROUND Hepatoid carcinomas (HCs) are extrahepatic neoplasms exhibiting features of hepatocellular tumors in terms of morphology and immunohistochemistry. They have been described in several organs, most notably in the stomach and ovary. They can present in pure forms or in association with other morphological aspects, such as endocrine tumors or ductal adenocarcinomas. The aim of this revie...