患者，男，47岁。13年前因下腹部包块1个月入院。体检：一般情况可，下腹正中们及-10cm×17cm肿物，超声示下腹非均质包块，诊断：腹膜后包块原因待查。于1983年7月11日手术，术中发现盆腔腹膜后-10cm×17cm肿块，有蒂连于后骼窝部，肿块右侧伴3cm×4cm肿块，于带部切断摘除肿? Patient, male, 47 years old. Thirteen years ago, he was admitted to the hospital with a lower abdominal mass for 1 month. Physical examination: The general situation can be, the lower abdomen and their -10cm × 17cm tumor mass, ultrasound shows the abdominal mass of abdominal mass, diagnosis: reasons for retroperitoneal mass to be investigated. In surgery on July 11, 1983, intraoperative pelvic retroperitoneal -10cm x 17cm mass was found. The pedicle was attached to the posterior iliac fossa. The mass was accompanied by a 3cm x 4cm mass on the right side.