１　病例报告患者，男性，３８岁。因发现右腋窝下肿块０．５年于１９９８年１１月２６日入院。患者入院半年前无意中发现右腋窝下有１个肿块，约２ｃｍ×２ｃｍ，无不适感，未处理，肿块缓慢增大。体检：右侧腋窝下有５ｃｍ×５ｃｍ大小肿块，质硬，无压痛，活动度差，与皮肤 1 case report patient, male, 38 years old. He was admitted to hospital on November 26, 1998 because he found that the right armpit mass was 0.5 years old. Six months before admission, the patient inadvertently discovered that there was a lump under the right iliac crest, about 2cm x 2cm, no discomfort, untreated, and the lump slowly increased. Physical examination: There is a 5cm × 5cm mass under the right armpit, hard, no tenderness, poor activity, and skin