题目内容

患者男，18岁，山区居民，反复多关节疼痛5年，加重4个月，查RF(-)，X线检查：指末节弯曲，指节增粗。符合早期诊断参考标准中的具有诊断意义的项目有

A. 1项
B. 2项
C. 3项
D. 4项
E. 5项

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患者男，18岁，山区居民，反复多关节疼痛5年，加重4个月，查RF(-)，X线检查：指末节弯曲，指节增粗。该病最先出现症状的关节为

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