< Back
33rd Annual Scientific Meeting proceedings
Stream:
|
Session:
Date/Time: 30-11--0001 (00:00 - 00:00)
|
Location:
Surgical management and outcome of perineal hypospadias in a Shetland lamb
Hewitt-Dedman CL*, Pryke S, Daniel CR, Garcia-Pertierra S, Mills ID, Luque Castro A
Royal (Dick) School of Veterinary Studies and Roslin Institute, The University of Edinburgh, Edinburgh, United Kingdom.
Objectives:
Hypospadias is a rare congenital disorder leading to an open urethra and displaced urethral orifice. Urethral reconstruction was used to successfully treat perineal hypospadias in a dog. This report describes an alternative surgical approach to treat this condition in a lamb.
Methods:
A 7-week-old male Shetland lamb presented with scrotal myiasis and marked urine scalding in the perineal region. Physical examination revealed incomplete fusion of the distal urethra from the ventral aspect of the external anal sphincter to the tip of the penis and a divided scrotum. The urethral orifice was immediately ventral to the anus. Both testicles were palpable in the scrotum and external female genitalia was not detected. Ultrasonography and computed tomography showed no evidence of other congenital abnormalities. En bloc preputial resection, phallectomy just distal to the level of the scrotum, scrotal ablation, castration, repair of the external anal sphincter and perineal body reconstruction was performed in dorsal recumbency under general anaesthesia. Perineal body reconstruction involved resection of a 5x10mm triangular wedge of mucosa and fibro-muscular tissue from 5mm distal to the urethral opening followed by a 3-layer closure using 3-0 poliglecaprone. The remaining distal urethral mucosa was resected at the mucocutaneous junction and closed in 2 layers.
Results:
The perineal body reconstruction created a shelf of tissue allowing the lamb to produce a focused stream of urine. There was no evidence of urine scalding or myiasis at 6-months post-surgery.
Conclusions:
Surgical management of perineal hypospadias in lambs can successfully prevent urine scalding with no complications reported in this case.
Back to the top of the page ^