The dorsal dermal sinus tract seen in our patient is a known anomaly in combination with CRS.
该例病人背侧所示的皮毛窦也是一个已知的CRS合并症。
It is also ideal for evaluating associated congenital anomalies such as dermal sinus tract, tethered cord etc.
而且对于评估伴随的先天畸形也是一种好的方式，如皮毛窦、脊髓栓系等。
Objective: to explore the clinical application and concrete operation methods in trans-tube sinus tract lithotomy by fiber choledochoscope.
目的：探讨应用纤维胆道镜经t形管窦道取石的临床应用和具体手术方法。
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