Gastrointestinal mesenchymal tumors are a group of tumors originated from the mesenchymal stem cells of the gastrointestinal tract, consisting of gastrointestinal stromal tumors (GIST), leiomyomas or leiomyosarcomas or schwannomas. Gastric schwannoma is a very rare gastrointestinal mesenchymal tumor, which represents only 0.2% of all gastric tumors and 4% of all benign gastric neoplasms. We rep...

Background and study aims Familial adenomatous polyposis (FAP) is an autosomal dominant syndrome caused by a germline mutation in the adenomatous polyposis coli (APC) gene, characterized by the presence of more than 100 adenomatous polyps in the colorectum. The upper gastrointestinal tract is an extracolonic site for malignancy in patients with FAP. The frequency of death in Japanese patients w...

BACKGROUND Meckel's Diverticulum is the most commonly encountered congenital anomaly of the small intestine, occurring in approximately 2% of the population. Occasionally Meckel's diverticulum harbors neoplasms. CASE PRESENTATION A 65 year old gentleman, presented with a pelvic mass. On exploratory laparotomy, it turned out to be gastrointestinal stromal tumour (GIST) arising from Meckel's di...

The cystic lesions of the gastrointestinal (GI) tract demonstrate the various pathologic findings. Some lesions may present a diagnostic challenge because of non-specific imaging features; however, other lesions are easily diagnosed using characteristic radiologic features and anatomic locations. Cystic masses from the GI tract can be divided into several categories: congenital lesions, neoplas...

The occurrence of synchronous primary neoplasms remains an issue of great interest to surgeons and oncologists in particular, and the medical field in general. The question of common genetic pathways in the pathogenesis of such neoplasms is always raised when such associations are seen-whether metachronously or synchronously. The possibility of the coexistence of multiple tumours in the same pa...

Objective. To discuss whether available information supports lymphatic mapping and sentinel node histology as a useful tool to grade gastrointestinal (GI) malignancies. Data collection. Selective review of the literature. (Thirty-five references) Data sellection. The most relevant paper dealing with lymphatic mapping and sentinel node biopsy were selected. Setting: Third healt care level hospit...

BACKGROUND Gastrointestinal neuroendocrine neoplasms (GI-NENs) are often located in the deep mucosa or submucosa, and the efficacy of endoscopic biopsy for diagnosis and treatment of GI-NENs is not fully understood. OBJECTIVE The current study analyzed GI-NENs, especially those diagnosed pathologically and resected endoscopically, and focused on the biopsy and cold biopsy forceps polypectomy ...

Appendiceal mucinous neoplasms are rare and account for just 0.6 percent of gastrointestinal malignancies approximately 0.7-1 appendicectomy specimens. Most the appendicular detected incidentally. We, herein, report images a case 76 years old male patient who presented with dull pain in lower abdomen palpable lump right abdomen. A contrast enhanced computed tomography scan revealed an ileo-coli...

Primary and secondary gastrointestinal tumors have been identified using sheep immunoglobulin G antibody to carcinoembryonic antigen radiolabeled with 131I. 99mTc-pertechnetate and 99mTc-human serum albumin were used to identify tissue spaces and blood pool and to facilitate external substraction imaging. In 13 patients with tumors, 4 of 5 primary sites and 8 of 11 secondary sites were successf...