第三个病例，梗阻由于十二指肠狭窄，是个部分环状胰腺。
In the third, the obstruction was due to duodenal stenosis, and there was an incomplete annular pancreas.
环形镍钛合金支架在气管造口成形中起到了环状软骨样的支撑作用，有效地防止全喉切除术后气管造口狭窄的发生。
Application of circular nickel titanium alloy stent in tracheostomy, which exerts a supporting effect of cricoid cartilage, can effectively prevent the tracheostomal stenosis after total laryngectomy.
手术证实肠旋转不良46例；先天性十二指肠狭窄或闭锁(包括膜式闭锁)24例，环状胰腺15例。
Surgical operation confirmed that 46 cases with malrotation of intestines, 24 with congenital duodenal atresia or stenosis (including membranous stenosis) and 15 with annular pancreas.
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