PERMANENT URINARY-DIVERSION IN 2 VIETNAMESE POTBELLIED PIGS BY EXTRAPELVIC URETHRAL OR URETHROPREPUTIAL ANASTOMOSIS

Permanent urinary diversion was performed in a Vietnamese pot-bellied pig to bypass apparent urethral obstruction at the level of the urethr al recess and in a second pig to correct bleeding from perineal urethr ostomy. In the first pig, extrapelvic anastomosis of the penile portio n of the urethra to the pelvic portion of the urethra was performed. I n the second pig, the penis was amputated and the pelvic portion of th e urethra was anastomosed to the preputial epithelium, creating a uret hropreputial conduit. Postoperatively, positive-contrast radiography d emonstrated continuity of the anastomoses, and both pigs were able to urinate normally. The pig with the urethropreputial anastomosis develo ped hematuria and nocturia that were controlled by continuous administ ration of antibiotics and resolved following cleansing of the preputia l diverticulum 1 year after surgery. Extrapelvic urinary diversion sho uld be considered for permanent resolution of urethral obstruction in Vietnamese pot-bellied pigs; urethral anastomosis is preferable to ure thropreputial anastomosis, because of the greater risk of ascending ur inary tract infection associated with urethropreputial anastomosis.