女,20岁,未婚。因下腹剧痛及肿块,阵发性加剧,伴频繁呕吐于1979年7月11日急诊入院。既往无腹痛史,月经正常。体验,腹部脐以下膨隆,可触及儿头大包块,压痛、质硬,边缘清,固定。B超,下腹实性包块,13×9cm,位于子宫右侧。术中见,腹腔内有少量淡黄色渗出液。肿瘤儿头 Female, 20 years old, unmarried. Due to severe lower abdominal pain and mass, paroxysmal intensification, accompanied by frequent vomiting in the emergency admission on July 11, 1979. No previous history of abdominal pain, normal menstruation. Experience, abdominal bulging under the umbilicus, palpable children head mass, tenderness, hard, clear edge, fixed. B-ultrasound, lower abdomen solid mass, 13 x 9 cm, located on the right side of the uterus. During surgery, there was a small amount of pale yellow exudate in the abdominal cavity. Tumor head