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分析髋骨与股骨上端骨肿瘤40例的临床表现，肿瘤病理类型与性质，并对治疗方案的选择作讨论。
Analyze the clinical manifestations of 40 patients with upper bone tumors of the hip and femur, the pathological types and properties of the tumors, and discuss the choice of treatment options.