A case of successful surgical management of colonic duplication with pygomelia in a 2-month-old dog.

Surgical management of complex congenital malformations can achieve favorable long-term outcomes in young dogs.

This case report describes the successful surgical management of a complex presentation of congenital malformations in a 2-month-old crossbreed female dog. The patient presented with multiple anomalies including pygomelia (accessory hind limbs), colonic duplication with duplicated anus, duplicated pelvis, perineal hernia, renal and ureteral abnormalities, and an additional ovary with associated uterine horn. Comprehensive imaging with computed tomography was essential for surgical planning, allowing identification of all anatomical abnormalities. Surgical intervention included excision of the duplicated colon and anus, disarticulation of supernumerary hind limbs, and hernia repair. The postoperative course was favorable with resolution of dyschezia and only mild residual gait abnormalities. Follow-up examination revealed bilateral medial patellar luxation, which was subsequently corrected surgically. This case demonstrates that despite the complexity of multiple congenital malformations, aggressive surgical management can result in good long-term functional outcomes in pediatric canine patients.

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