患者钱某,男性,42岁,1987年12月25日入院。 1957年因左臀部拳头大肿物,在当地医院诊断“脂肪瘤”手术切除。1年后肿物复发,迅速长大并新下坠于左大腿外侧,形状不规则,无疼痛及感觉异常。双下肢皮下亦渐生长多数结节样肿物。人体消瘦。左臀肿物(见封3彩照1～2)不规则,80cm×70cm×30cm,臀后部份量圆形,上下部份变窄,下部坠于股外侧,皮下可见多条伸入肿物之静脉,直径约0.5～0.8cm。质地不均匀,臀部中心部位表皮坏死变黑,呈囊性。肿物与股部皮肤接触 Patient Qianmou, male, 42 years old, was admitted to hospital on December 25, 1987. In 1957, due to a large mass in his left buttock, he was diagnosed with a lipoma in the local hospital. After 1 year, the tumor relapsed, rapidly grew up and newly fell on the outside of the left thigh. The shape was irregular and there was no pain or paresthesia. Most of the lower extremities subcutaneous also gradually grew the majority of nodular masses. Body weight loss. The left hip mass (see cover 3 color photo 1 to 2) is irregular, 80cm×70cm×30cm, and the back part of the hip is round, the upper part and the lower part are narrowed, the lower part falls on the lateral side of the femoral, and many protruding tumors are visible under the skin. The vein is about 0.5-0.8cm in diameter. Inhomogeneous texture, epidermal necrosis in the center of the buttocks became dark and cystic. Tumor and thigh skin contact