睾丸鞘膜：解剖名。为男性腹膜的延续，分为壁层和脏层。壁层衬贴于精索内筋膜的内侧，脏层覆盖于睾丸和附睾的表面，在睾丸后缘处，脏层与壁层互相移行。脏层与壁层之间的腔隙，即鞘膜腔，内含少量液体。
结论强光团、后伴声影、可移动是睾丸鞘膜腔内结石的主要超声征像。
Conclusion The major characteristics of calculi in the cavity of perididymis on ultrasonography are hyperechogenic with acoustic shadow and calculi moved as position changed.
结果在21例睾丸鞘膜腔内结石的超声表现中，21例均为强光团，18例后伴声影，21例强光团均可移动。
Results Among 21 cases presented hyperechogenic on ultrasonography. There were 18 cases with acoustic shadow and all calculi moved as position changed.
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