例1.女,68岁。左腹部发现肿块伴发热、纳差40天。B超 脾肿大,内部光点紊乱,提示混合性肿块。钡透:胃大弯侧有恒定外压切迹,胃体右移,提示胃外肿块。肾盂造影未见异常。体检:左中腹触及20×15cm肿块,质硬,表面结节感,活动差,轻触痛。疑为肠系膜肿瘤,于1982年6月29日剖腹探查。术中见脾下极有20×15×10cm大小质硬的肿瘤,表面结节状,包膜完整,未向周围浸润,脾门及 Example 1. Female, 68 years old. A mass was found in the left abdomen with fever and anorexia of 40 days. B-splenomegaly with disordered internal light spots suggesting a mixed mass. Permeabilization: There is a constant external pressure notch on the side of the large curvature of the stomach, and the gastric body moves to the right, suggesting an extra-tumoral mass. There was no abnormality in the pyelogram. Physical examination: The left mid-abdominal region touched a 20×15cm mass, which was hard, had nodules on the surface, and had poor activity and tenderness. Suspected as mesenteric tumor, exploratory laparotomy on June 29, 1982. During the operation, the tumor with a size of 20×15×10 cm was found to be extremely hard. The surface was nodular and the capsule was intact without infiltrates around the abdomen.