A 39-year-old woman presented to our hospital because of melena. A physical examination was unremarkable, and her hemoglobin level was 7.3 g/dL (normal 12-16 g/dL). EGD revealed an 8-mm, centrally ulcerated, bleeding, submucosal tumor in the third portion of the duodenum (A, B). Abdominal CT showed that there also was a well-enhanced, heterogeneous, 5-cm mass at the third portion of the duodenum (C). The tumor was seen to be a hypermetabolic, soft-tissue mass by positron emission tomography. A wedge resection of the tumor was performed for diagnosis and treatment. The excised mass was an ovoid, solid, nodular, spindle cell, mesenchymal tumor measuring 5.8 X 4 X 4 cm that involved the submucosal and muscular layers of the duodenal wall (D).
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机译：一名39岁妇女因黑便病而到我们医院就诊。体格检查无异常，她的血红蛋白水平为7.3 g / dL（正常为12-16 g / dL）。 EGD在十二指肠的第三部分（A，B）显示了一个8毫米，中央溃疡，出血的粘膜下肿瘤。腹部CT显示，十二指肠第三部分（C）也有一个增强的，异质的5厘米肿块。通过正电子发射断层摄影术观察到该肿瘤是代谢过度的软组织肿块。对肿瘤进行楔形切除以进行诊断和治疗。切除的肿块为卵形，实心，结节状，梭形细胞，间充质肿瘤，大小为5.8 X 4 X 4 cm，累及十二指肠壁的粘膜下层和肌肉层（D）。
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