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４０例儿童强直性脊柱炎（ＪＡＳ）首发症状为外周关节受累者３４例，其中有２６例经平均５、６年后出现中轴关节受累，另４例直至就诊没有中轴受累表现。早期ＪＡＳ有时诊断困难，易误诊为儿童类风湿关节炎（ＪＲＳ）。本组病例均在１６岁以后确诊，作者认为目前ＪＡＳ主要为回顾性诊断。
The first symptom of 40 cases of children with ankylosing spondylitis (JAS) were 34 cases of peripheral joint involvement, of which 26 cases had central axis joint involvement after an average of 5-6 years and the other 4 cases did not show central axis involvement until their visit. Early JAS sometimes diagnostic difficulties, often misdiagnosed as children with rheumatoid arthritis (JRS). The patients were diagnosed after the age of 16, the author believes that the current JAS mainly for retrospective diagnosis.