Mesenteric gastrointestinal stromal tumor

Abstract

Gastrointestinal stromal tumors (GIST) are the most common mesenchymal neoplasms of the gastrointestinal tract (1) and account for only 2% of all neoplasms of the digestive system (2). The incidence is 0.6 to 1.8 per 100,000 inhabitants. The median age at diagnosis is 63 to 67 years, and no genderrelated differences are observed. The primary origin of the tumor is most commonly the stomach (50-60%), followed by the small intestine (20-30%), large intestine (10%), esophagus (5%), and omentum, mesentery, and retroperitoneum (5%) (2). Case report A 71-year-old woman came to the emergency room for increased abdominal circumference, discomfort of 1 month's duration, and a decrease in the amount and consistency of stools, but no change in bowel movement frequency. The patient's relevant history included allergy to penicillin, hypertension, dyslipidemia, and intrinsic asthma. The physical examination revealed a large, hard, painful abdominal tumor; the laboratory workup was normal and the tumor markers were negative. The abdominal ultrasound and the abdominal and pelvic computed tomography (CT) scan showed normal adnexa, linear endometrium, and the presence of a solid mass of 17.6 x 17.6 x 11 cm. The origin could not be determined.