Surgical management and long‐term outcome of complete penoscrotal transposition in a dog

Abstract

AbstractA 1.66 kg, approximately 4‐week‐old, intact male canine mixed breed was evaluated for 'urinating backward'. Genitourinary evaluation revealed that the preputial opening was not patent, and his penis traversed in a caudal direction, exiting in the perineum caudal to the scrotum. Testicles were not palpated at this time. Over an 8‐week period as the dog continued to undergo musculoskeletal maturation, the scrotum would become intermittently infected, and the dermal exit site of the penis constricted the penis resulting in marked paraphimosis. En bloc preputial resection, phallectomy, scrotal ablation, castration and perineal urethrostomy (PU) were performed to correct this abnormality. Histopathology confirmed only a left testicle within the scrotum. Abdominal imaging and anti‐Mullerian hormone assay confirmed right testicular cryptorchidism. Two months after the initial surgery, successful removal of the retained right testicle was performed, and the dog was reported to be urinating through the PU stoma normally. This is the first reported case of penoscrotal transposition in a dog.