对原发性骨髓纤维化误诊为强直性脊柱炎1例分析如下。1病历摘要男,50岁。于2010-05-05因反复发热伴腰痛、双膝关节痛2个月入院。患者于2个月前,无明显诱因出现发热,多在午后发生,常为低热,患者发热时伴有腰痛、双侧膝关节疼痛,晨起腰板,偶有盗汗,无皮疹,无口腔溃疡,无眼红、眼 Misdiagnosed as primary myelofibrosis ankylosing spondylitis 1 case analysis is as follows. 1 medical record summary male, 50 years old. 2010-05-05 Due to repeated fever with low back pain, knee pain in 2 months hospitalization. Patients 2 months ago, no obvious incentive to fever, and more in the afternoon, often low fever, fever in patients with low back pain, bilateral knee pain, morning back plate, occasional night sweats, no rash, no mouth ulcers, No jealousy, eyes