Extra gastrointestinal stromal tumor (E-GIST) of the omentumIntroduction: Tumors that are pathologically and immunohistochemically similar to gastrointestinal stromal tumors (GIST), but coming from soft tissues of the mesentery or retroperitoneum are called extra gastrointestinal stromal tumors (E-GISTs) and are more aggressive than GISTs. Clinical case: We report a 46 years old woman operated for a uterine sarcoma with a liver metastasis of the tumor, subsequently subjected to radiotherapy. A new CAT scan showed a 21 x 12 cm tumor. Radiotherapy was discontinued and the patient refused chemotherapy. Four years later, the patient consulted in the emergency room for a partial bowel obstruction. A new CAT scan showed a tumor that occupied the abdominal and pelvic cavity. The patient was operated, finding a highly vascularized and multisystem tumor that was fused together with the omentum, which was excised. The pathological diagnosis of the surgical piece was a high risk GIST.
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