结论 下颌前突组，（1） 舌骨向下移位，舌背上抬，舌根向后移动。
Conclusions Of the patients with mandibular prognathism, 1. the hyoid bone shifted downward, the dorsum lingua raised and the base of the tongue moved posteriorly;
结果宫内节育器移位以节育器下移最常见，临床表现以出血为主。
ResultsThe intrauterine device IUD downward shifted to the most common clinical manifestations were mainly bleeding.
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