患者男性,40岁。发现右臀部包块半年入院。2年前行右臀部肿块切除术,当地医院病理诊断:纤维肉瘤。体检:右臀部触及一质硬包块,压痛,边界欠清楚,活动度差,表面无溃疡、波动感,腹股沟区未触及肿大淋巴结。盆腔CT示右侧臀大肌肿胀并肿块,肌间隙模糊,累及皮下脂肪层,未侵及皮肤。行肿瘤切除+臀大肌部分切除术,术中见包块约10 Male patient, 40 years old. Found that the right hip mass hospitalized six months. Right hip resection 2 years ago, the local hospital pathological diagnosis: fibrosarcoma. Physical examination: The right hip touches a hard mass, tenderness, the border is not clear, the activity is poor, the surface no ulcers, fluctuations in the groin area did not touch the enlarged lymph nodes. Pelvic CT showed the right gluteus maximus swollen and lumps, blurred muscle space, involving the subcutaneous fat layer, did not invade the skin. Tumor excision plus partial resection of the gluteus maximus, intraoperative see mass about 10