Equine Male Surgery

Question 1

What is segmental posted to my?

Answer 1

Removal of a portion of the penis due to:

• Neoplasms
• Granulomas (Habronema infest)
• Scar tissue
• chronic thickening
• Penile paralysis
• fairly superficial problems

1) cricumcision
2) reefing

Question 2

What surgical preparation is required for segmental pros the Tommy?

Answer 2

1) dorsal recumbency
2) General anesthesia
3) catheterization of the urethra
4) tourniquet

Question 3

T/F: you want large longitudinal subcutaneous branches of external pudendal arteries and veins

Answer 3

FALSE

You want to avoid LARGE longitudinal SQ branches of external pudendal arteries and viens

Question 4

What would you do for after care for segmental prosthectomy?

Answer 4

1) isolate from mares 2-4 weeks

2) regular exercise (reduces edema)

Question 5

What are the potential complications of segmental prosthectomy?

Answer 5

1) edema
2) hematoma formation
3) infection
4) dehiscence

Question 6

T/F: Reefing (circumferntial posthectomy) is performed only for severe, infiltration lesions of the prepuce and penis

Answer 6

FALSE

-involves the removal of a circumferential ring of Preputial tissue

Question 7

What is Phallectomy?

Answer 7

Amputation of the Penis

Question 8

What are the indications for Phallectomy?

Answer 8

1) irreparable penis damage
- penile paralysis

2) extensive neoplasia

Question 9

What should be done for patient preparation for Phallectomy?

Answer 9

• castrate 3-4 weeks pre op
• Dorsal recumbency
• General anesthesia
• Catheterization of the urethra
• Tourniquet

Question 10

What are the 4 different techniques for Phallectomy?

Answer 10

1) Visnot’s technique
- base of triangle face tourniquet

2) William’s technique
3) Scott’s technique
4) En Bloc resection

Question 11

Describe the Visnot’s technique

Answer 11

• base of the triangle is facing the tourniquet

- suture urethra to skin

Question 12

Describe the williamn’s technique

Answer 12

The tip of the triangle is facing the tourniquet

-suture urethra to skin

Question 13

Describe Scotts technique

Answer 13

• circumferential incision (all the way down to the urethra)

- close corpus cavernosum

Question 14

Describe En bloc resection?

Answer 14

• relocate to perineal orifice
• not good prognosis (urine scolding)
• Last resort

Question 15

T/f: En Bloc resection and penile retroversion are warranted for the treatment of horses with extensive lesions of the penis and/or prepuce with metastasis

Answer 15

TRUE

Question 16

What is Bolz’ technique of Phallopexy?

Answer 16

• retract paralyzed penis (penile paralysis
• to avoid Phallectomy

1) skin incisions caudal to scrotum
2) manual retraction of Penis into prepuce (avoiding large pudendal vessels)

*retract to annular ring with 2 heavy non absorbable percutaneous sutures

Question 17

T/F: only horses have an annular ring

Answer 17

TRUE

Question 18

What after care should be done for Phallectopexy?

Answer 18

1) CASTRATION
2) Handwalk daily
3) remove percutaneous sutures in 10-12days
4) heavy exercise 2-4 weeks post op

Question 19

Why do you want to heavily expertise a horse 3-4weeks post op (Phallopexy)?

Answer 19

You really want to build up scar tissue…to make it more stable

Question 20

Describe Hyperthermic therapy to treat squamous cell carcinoma in horses

Answer 20

• water bath 45min 45 degrees C

Tissue sloughs off
45days later looks fairly good

Question 21

What are the differentials for Equine testicular Neoplasia?

Answer 21

1) Seminoma
2) tertoma
3) interstitial Cell tumor (LEYDIGS)
4) serotonin cell tumor

Tx: Orchidectomy