患者　男 ,44岁。以左肩臂部外侧巨大包块 ,进行性增大3年于 1998年 5月入院。患者于 1987年曾因左肱骨上段软骨粘液样纤维瘤并病理性骨折 ,接受了瘤段截除加同种异体骨半关节移植术。术后 2年随访发现异体骨吸收、萎缩 ,尤其肱骨头破坏吸收明显 ,异体骨上端有骨折 ,异体骨 -宿 Male patient, 44 years old. To the left shoulder arm outside the huge mass, progressive increase 3 years in May 1998 admitted. In 1987, the patient underwent excision of the tumor segment plus allogeneic bone-half-joint arthroplasty due to a pathological fracture of the upper left humerus with myxoid myofibroma. Abdominal bone resorption and atrophy were found after 2 years of follow-up, especially in the humeral head destruction, bone allograft, allogeneic bone-sink