陈某,男,50岁。农民。患者于1983年11月17日因右下腹疼痛、痞满拒按,伴呕吐1天而收入某院住院治疗,诊为“急性阑尾炎”,拟行阑尾切除术。术中阑尾未见异常,探查发现右中腹膜后有一约18×15×7厘米大小之肿块,呈暗红色,表面弥漫性渗血,穿刺未见任何液体,腹腔内有少量血性渗出物。临台会诊,确诊为“腹膜后恶性淋巴肉瘤”。考虑条 Chen, male, 50 years old. Farmers. On November 17, 1983, the patient was admitted to a hospital for treatment due to pain in the right lower abdomen, fullness and rejection, and vomiting for 1 day. The patient was diagnosed as “acute appendicitis” and an appendectomy was planned. There was no abnormality in the appendix, and it was found that there was a mass of about 18 × 15 × 7 cm behind the right middle peritoneum. It was dark red, and the surface was diffusely oozing. There was no fluid in the puncture and there was a small amount of bloody exudate in the abdominal cavity. Pro-Taiwan consultation confirmed the diagnosis of “retroperitoneal malignant lymphosarcoma.” Consider the bar