An 11-month-old entire male Cob colt was presented for unilateral cryptorchid castration and intermittent purulent urethral discharge. Cystoscopy, trans-cutaneous and trans-rectal abdominal ultrasonography and contrast enhanced computed tomography examinations confirmed unilateral cryptorchidism, ipsilateral renal dysplasia and pyoureter with dilatation and ectopia. While nephrectomy may be a viable treatment approach for some cases of unilateral renal dysplasia, surgical intervention was not attempted in this case owing to financial constraints and the yearling was subjected to euthanasia. To the authors’ knowledge, this is the first report of a case of complex congenital urogenital malformation including ipsilateral renal dysplasia, pyoureter with dilatation and ectopia and cryptorchidism, a finding which has been reported more commonly in human males.

中文翻译：

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11 个月大的 Cob colt 出现肾发育不良、异位输尿管、败血性输尿管扩张症和隐睾症，表现为上升的脓尿管和脓囊炎

一头 11 个月大的整只雄性 Cob 小马因单侧隐睾去势和间歇性尿道脓性分泌物而入院。膀胱镜检查、经皮和经直肠腹部超声检查和对比增强计算机断层扫描检查证实了单侧隐睾、同侧肾发育不良和伴有扩张和异位的脓尿管。虽然对于某些单侧肾发育不良病例，肾切除术可能是一种可行的治疗方法，但由于经济拮据，在这种情况下没有尝试手术干预，而且一岁的幼崽被安乐死。据作者所知，这是首例复杂的先天性泌尿生殖系统畸形病例，包括同侧肾发育不良、输尿管扩张、异位和隐睾，