Case Report: A Rare Presentation of Large Abdomino-Pelvic Malignant GIST (Gastrointestinal Stromal Tumor)

Gastrointestinal stromal tumors (GISTs) are the most common sarcomatous tumors of the gastrointestinal tract and are commonly seen in Stomach (60 % -40%), Small Intestines (30 %) and Colon (15%)[1], they may occur anywhere in the entire length of Gastrointestinal tract from the esophagus to anus, even in mesentry and omentum adjacent to but separate from stomach and intestines [2] which is rare. Pathologically Spindle cell form is the most common (70%) subtype of GISTs , less common are Epithelioid (20%) and rare are mixed type (10%) [1]. Small tumors less than2 cm of benign variety make up most of the presentations of GISTs and are usually seen in the age group of 40 ? 60 years. Here we present to you a rare presentation of the less common Epithelioid variety of a large hemorrhagic fluid filledmalignant GIST measuring 27cm x 15cm occupying the whole of abdomen and pelvis in a 88 year old man.