××，男，１８岁，出生后即发现右前臂肿物。于１９９６年７月２３日收入我院，住院号９６－７９１０。查体：右前臂尺侧至右肘关节内侧可见皮下肿物，大小约６ｃｍ×４ｃｍ×１ｃｍ，边界不清，触诊质软，有颗粒感。屈肘关节时肿物隆起皮面，张力升高，轻触痛，右环小指... ××, male, 18 years old, found a right forearm mass after birth. He was admitted to our hospital on July 23, 1996, and the hospital number was 96-7910. Physical Examination: A subcutaneous mass was seen from the ulnar side of the right forearm to the inside of the right elbow joint. The size was approximately 6cm x 4cm x 1cm. The border was unclear and the contact was soft and grainy. When the elbow joint is flexed, the tumor rises up to the surface of the skin, the tension rises, the tenderness touches, and the right ring little finger...