Gastrointestinal stromal tumors (GIST omi) are a heterogeneous group of mesenchymal tumors. Etiological factors that cause GIST ome are not clearly distinguished, characterized by remarkable diversity of the clinical, histopathological and genetic features. Mitotic activity, nuclear pleomorphism, degree of cellularity, nuclear-cytoplasmic ratio, tumor size, mucosal invasion, tumor ulceration and necrosis, are factors that determine the malignancy of these tumors. The most common location of these tumors of the stomach and small intestine, while very rare localization of the colon, esophagus and rectum. Despite the progress that has been made in the diagnosis and further diagnosis of intra - or postoperative. The aim of this report is to contribute to easier recognizing the symptoms, diagnosis and treatment of these tumors. It was a mixed tumor, epitheloid-spindle type cells, immunohistochemical analysis, we have a positive expression of CD 117 and CD 34.

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