... all the GI tract: 50-70% in the stomach, 25-30% in the small intestine, 5-10% in the colon-rectum, < 5% in th e esophagus, the remainingmay a rise within the omentum or within the peritonellayers ... processing was obtained with formalin fixation fol-lowed by paraffin inclusion, 3 μm sectioning, and staining with he matoxylin and eosin. Morphologicappearance and cellular descriptions referred ... from interstitial cell of Cajal, or their related stem cells. The mostcommon clinical presentation of these tumors is gastrointestinal bleeding, otherwise they may cause intestinalobstruction,...