患者,男性,36岁。3月前自己发现腹部包块,以后渐增大,不痛;食欲和大小便正常。于1983年3月21日入院,体检:消瘦,右中腹可触及拳头大之包块,质硬,边缘清楚,表面光滑,有如“肾”的外形,可以推动,无压痛。超声波检查肿块为实质性。于3月30日行剖腹探查术,术中肿块大小为11×10×5cm~3,似马蹄形,暗红色,表面光滑,呈结节状,无包膜,位于腹膜后,约有小指粗、0.4cm长的蒂与十二指肠水平部肠下壁相连,并与十二指肠肠腔相通,似“肠憩 Patient, male, 36 years old. 3 months ago, he found that his abdominal mass had become larger and he had no pain; his appetite and urine were normal. Admitted to the hospital on March 21, 1983, physical examination: weight loss, right middle abdomen can touch the fist mass, hard, clear edge, smooth surface, like the “kidney” shape, can be promoted, no tenderness. Ultrasound examination of the mass is substantial. The exploratory laparotomy was performed on March 30th. The intraoperative tumor size was 11×10×5cm~3. It was horseshoe-shaped and dark red. The surface was smooth, nodular, no capsule, located behind the retroperitoneum, and about the pinky little finger. The 0.4cm long pedicle is connected to the intestine wall of the duodenum and communicates with the duodenal intestine.