This case report records a unilateral perineal hernia in a 7-year-old female donkey. The donkey had a history of unilateral swelling lateral to the left vulvar lip and difficulty in defaecation. Upon palpation, the swelling was painless, soft and reducible. Ultrasonography revealed a hyperechoic hernia sac containing dilated nonmotile bowel with homogenous hypoechoic contents. Primary herniorrhaphy was performed after repositioning of the herniated bowel. The donkey made an uneventful recovery with no recurrence or complications for 6 months of available follow-up. In conclusion, perineal hernia should be considered in the differential diagnosis of perineal swellings in donkeys. Clinical examination, ultrasonography and surgical exploration are valuable for definite diagnosis of perineal hernia in donkeys. Surgical herniorrhaphy was successful in correcting the problem in this case.

中文翻译：

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驴会阴疝的超声检查和手术治疗

本病例报告记录了一头 7 岁母驴的单侧会阴疝。驴有左外阴唇外侧单侧肿胀和排便困难的病史。触诊时，肿胀无痛、柔软且可减轻。超声检查显示高回声疝囊，内含扩张的非运动性肠，低回声内容物均一。在重新定位突出的肠道后进行原发性疝修补术。这头驴子在 6 个月的可用随访中顺利康复，没有复发或并发症。总之，在驴会阴肿胀的鉴别诊断中应考虑会阴疝。临床检查、超声检查和手术探查对驴会阴疝的确诊具有重要价值。