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患者，男，２５岁。两年前发现左上臂一肿块，黄豆大小，无明显不适。近５个月发现肿块逐渐增大，胀痛，门诊以“横纹肌肿瘤”收住入院。查体：左上臂可触及一６ｃｍ×５ｃｍ×４ｃｍ肿块，表皮不红，无压痛，质中等，边界清，尚可推动。左肱骨Ｘ线摄片：骨干显示完整，未...
Patient, male, 25 years old. Two years ago, a lump in the upper left arm was found. The size of the soybean was no significant discomfort. In the past 5 months, the masses were gradually enlarged and painful. The outpatients were admitted to the hospital with “striated muscle tumors”. Physical examination: A lump of 6cm x 5cm x 4cm can be touched on the left upper arm. The epidermis is not red, there is no tenderness, the quality is medium, and the boundary is clear. It can still be promoted. Left tibia X-ray: The backbone shows complete, not...