血友病临床常见,然血友病致假性骨肿瘤罕见,极易造成误诊,现报告两例。例1:男,15岁。因步态蹒跚,右膝关节肿胀畸形,于1987年2月9日入院。无外伤史。查体:心、肺、肝、脾无异常。右膝关节肿大,周径达47cm,关节屈伸不灵,局部挛缩。Hb100g/L;WBC9.8×10~9/L,N0.75,L0.25;BPC100×10~9/L,BT2~(?), Hemophilia is a common clinical condition. However, pseudo-bone tumors caused by hemophilia are rare and can easily cause misdiagnosis. Two cases are reported. Example 1: Male, 15 years old. Swelling deformity of the right knee joint was admitted on February 9, 1987 due to gait. No history of trauma. Physical examination: No abnormalities in heart, lung, liver and spleen. The right knee joint was swollen with a 47 cm circumference, and the joint was flexed and flexed, with local contracture. Hb100g/L; WBC9.8×10~9/L, N0.75, L0.25; BPC100×10~9/L, BT2~(?),