目的 分析总结误诊为脊柱关节炎(SpA)的低磷软骨病(HO)的临床特点,寻找误诊原因,改善HO患者的预后.方法 收集曾误诊为SpA的26例HO患者病历资料,对其临床特征、实验室检查及影像学表现进行分析,并回顾相关文献,总结其临床特点.结果 (1)一般资料:26例患者男12例,女14例,中位年龄38(20 ~ 60)岁,平均病程3.2(9个月~10年)年,其中肿瘤致HO15例,长期口服阿德福韦酯致HO 4例,范可尼综合征致HO 3例,甲状旁腺功能亢进症致HO 2例,干燥综合征并发肾小管酸中毒致HO 2例.26例患者均有腰背痛,晨僵约30 min,其中15例有夜间腰背痛.(2)实验室检查:PLT、炎性指标[ESR、C反应蛋白(CRP)]多正常,血钙正常或稍低,所有患者均有低磷血症,ALP均升高.阿德福韦酯、范可尼综合征、干燥综合征并发肾小管酸中毒致HO患者有低钾、高氯血症、碱性尿,甲状旁腺功能亢进症患者甲状旁腺激素(PTH)升高,干燥综合征患者抗核抗体(ANA)(滴度≥1∶320)、抗SSA/SSB抗体阳性.(3)影像学检查:HO患者可在X线、CT、PET-CT、MRI上表现为骶髂关节病变,但病变均以骶骨、髂骨为主,而非关节本身.同时有骨代谢异常的表现,骨扫描异常不仅存在于关节部位,在肋骨、长骨及其他软组织部位均可见异常显像.结论 HO在临床上并不少见.
Objective To study and summarize the clinical features of hypophosphatemia osteomalacia (HO) misdiagnosed as spondyloarthritis (SpA),aiming to analyze the reasons of misdiagnosis and improve the prognosis of such patients.Methods A total of 26 cases of HO misdiagnosed as SpA were selected.Clinical features,laboratory tests,and image presentations were analyzed.Related literatures were reviewed.Results (1) Clinical characters:26 patients were included (12 males and 14 females) with a median age of 38 years (range 20-60).The mean disease duration was 3.2 years (range 0.75 to 10 years).Of all the patients,15 were diagnosed as tumor-induced HO,4 were long-term oral adefovir dipivoxil-related HO,3 were associated with Fanconi syndrome,2 were related to hyperparathyroidism,while 2 were Sjogren''s syndrome complicated with renal tubular acidosis.All of the 26 patients presented with low back pain including 15 with night pain.The time of morning stiffness was about 30 minutes.Non-ste