PROLAPSE WITH EVERSION OF THE URINARY-BLADDER IN A MARE

A case of urinary bladder eversion with prolapse in a mare is describe d. The mare's condition was a consequence of excessive abdominal strai ning due to recent parturition. In this case the bladder everted throu gh the urethral opening. As the bladder was turned ''inside out,'' the reddish mucosal surface was visible with two ureteral openings on the dorsal surface from which urine was periodically expressed. The mare was treated surgically by means of a dorsal urethral sphincterotomy an d replacement of the urinary bladder into the abdomen.