A Unique Coexistence of Rectal Adenocarcinoma and Gastric Antral Gastrointestinal Stromal Tumor: A Case Report and Minireview.

Several studies have reported the coexistence of gastric gastrointestinal stromal tumors (GISTs) with many primary carcinomas such as gastric and renal cell carcinomas. However, to date reports about the coexistence of gastric GISTs and colorectal adenocarcinoma are limited. Herein we report a unique case of gastric GIST coexisting synchronously with rectal adenocarcinoma in a 36-year-old male patient who presented with weight loss, vomiting, and bleeding per rectum.

Incidence of Gastrointestinal Neuroendocrine Tumor: Case Series, Armed Forces Hospital Southern Region, Hospital-Based Tumor Board Registry.

Neuroendocrine tumors are aggressive and rare tumors which can occur almost everywhere in the body. The annual incidence of neuroendocrine tumors is 2.5-5 per 100000.