horseshoe fistula

例句：

1. 1. The horseshoefistula was causing significant pain and discomfort.
   马蹄形瘘管引起了严重的疼痛和不适。
2. 2.The patient underwent surgery to repair the horseshoe fistula.
   患者接受了手术来修复马蹄形瘘管。
3. 3. The doctors discovered a horseshoe fistula in the patient'schest cavity.
   医生们在患者的胸腔内发现了一个马蹄形瘘管。