Author, Donkey, Bureaucrats, Administrators
53,803
edits
Changes
Male External Genitalia - Pathology (view source)
Revision as of 19:49, 12 April 2011
, 19:49, 12 April 2011Created page with " ===Pathology of external genitalia=== *CONGENITAL ANOMALIES OF PENIS #Absence of penis:usually seen only as part of a major whole-body malformation. #Micropenis:seen in bulls (..."
===Pathology of external genitalia===
*CONGENITAL ANOMALIES OF PENIS
#Absence of penis:usually seen only as part of a major whole-body malformation.
#Micropenis:seen in bulls (malformation of sigmoid flexure). Also some dogs.
#Persistent penile frenulum:bulls and dogs. Associated with cork screw or deviation of penis.
*CONGENITAL ANOMALIES OF THE PREPUCE
#Absence or agenesis:may be associated with pseudo-hermaphroditism.
#Absence of preputial orifice:seen in pups.
#Phimosis:small preputial orifice, penis cannot be extruded from prepuce.
(Paraphimosis - prepuce can be drawn behind the glans but cannot return after erection).
#Hypospadias/epispadius:failure of anatomical closure of prepuce and/or urethra.
*INFLAMMATION
#Posthitis:inflammation of prepuce
#Balanitis:Inflammation of glans penis
#Balanoposthitis:usual for both to be involved
<br>Dogs:suppuration and/or ulceration due to E. coli, Proteus or Haemophilus spp.
<br>Bulls:IBR virus causes ulceration which may become secondarily infected.
<br>Rams and wethers:occlusion of the urethral appendage as a result of calculi causing a necrotising lesion of the glans ± urethral rupture and subcutaneous leakage of urine.
*NEOPLASIA
#Transmissible fibropapilloma:seen in bulls, bovine papillomavirus type 2.
Multiple luxuriant growths, painful, easily traumatised. Transmissible to females. Spontaneous regression.
#Squamous cell carcinoma:seen in geldings.
Less common in bulls and dogs, low-grade malignancy may ulcerate and haemorrhage.
#Melanoma:occurs on prepuce and scrotum of grey horses. Often benign.
#Transmissible venereal tumour:seen in dogs and bitches.
#Sarcoids:equine prepuce
Information by kind permission of Professor R W Else
[[Category:To Do - Reproductive]]
[[Category:Male Reproductive System - Pathology]]