AS的关节外表现主要有肌腿端炎、虹膜炎或虹睫炎、泌尿系症状和慢性腹泻史，这些症状可作为AS的诊断线索。
The main extra-articular manifestations of AS were enthesitis, iritis or iridocyclitis, urinary tract symptoms and chronic diarrhoea, which might offer clues for the diagnosis.
目的探讨胎儿泌尿系异常各种声像图表现及这类胎儿伴发的其它系统异常。
Objective To investigate the various ultrasonic features of abnormal fetal urinary system and other system abnormalities accompanied.
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