Unilateral scrotal enlargement and cryptorchidism in two boars

Two approximately 10-year-old, intact male, Vietnamese Pot-bellied pig crosses were presented to the Large Animal Teaching Hospital at the Auburn University College of Veterinary Medicine for evaluation of unilateral scrotal enlargement of one year's duration and historic diagnosis of cryptorchidism in both animals. An ultrasonographic examination of the scrotum was performed. The tissue within the scrotum had no defining features of a normal testicle. Based on physical examination, history, and ultrasonographic findings, testicular neoplasia was the primary differential diagnosis. Due to financial constraints and age of the animals, humane euthanasia was elected. The enlarged testicles from both pigs were histopathologically evaluated resulting in a definitive diagnosis of right testicular Leydig (interstitial) cell tumor for both patients. Not largely reported in the pig, neoplasia must be considered a differential for any intact male. The presented cases demonstrate the importance of early castration for males not intended for breeding.