Difference between revisions of "Male External Genitalia - Pathology"

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(Created 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 (...")
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==Pathology of external genitalia==
 
  
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===Congenital abnormalities of the penis===
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===Pathology of external genitalia===
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* '''Absence of penis''':usually seen only as part of a major whole-body malformation.
 
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* '''Micropenis''':seen in bulls (malformation of sigmoid flexure).  Also some dogs.
 
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* '''Persistent penile frenulum''':bulls and dogs.  Associated with cork screw or deviation of penis.
 
  
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===Congenital abnormalities of the prepuce===
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*CONGENITAL ANOMALIES OF PENIS
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* '''Absence or agenesis''':may be associated with pseudo-hermaphroditism.
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#Absence of penis:usually seen only as part of a major whole-body malformation.
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* '''Absence of preputial orifice''':seen in pups.
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#Micropenis:seen in bulls (malformation of sigmoid flexure). Also some dogs.
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* '''Phimosis''':small preputial orifice, penis cannot be extruded from prepuce.
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#Persistent penile frenulum:bulls and dogs. Associated with cork screw or deviation of penis.
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* '''[[Paraphimosis]]''': prepuce can be drawn behind the glans but cannot return after erection).
 
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* '''[[Urethra - Developmental Pathology|Hypospadias/epispadius]]''':failure of anatomical closure of prepuce and/or urethra.
 
  
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===Inflammation===
 
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* '''Posthitis''':inflammation of prepuce
 
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* '''Balanitis''':Inflammation of glans penis
 
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* '''[[Ulcerative Balanoposthitis|Balanoposthitis]]''':usual for both to be involved
 
  
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Dogs:suppuration and/or ulceration due to ''[[Escherichia coli|E. coli]], [[Proteus|Proteus]]'' or [[Haemophilus species|''Haemophilus'' spp]].
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*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.
 +
 
 +
 
 +
 
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*INFLAMMATION
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#Posthitis:inflammation of prepuce
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#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>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.
 
<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.
  
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===Neoplasia===
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*NEOPLASIA
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* '''[[Bovine Papillomaviruses|Transmissible fibropapilloma]]''': seen in bulls, bovine papillomavirus type 2.
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#Transmissible fibropapilloma:seen in bulls, bovine papillomavirus type 2.
 
Multiple luxuriant growths, painful, easily traumatised.  Transmissible to females. Spontaneous regression.
 
Multiple luxuriant growths, painful, easily traumatised.  Transmissible to females. Spontaneous regression.
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* '''[[Squamous Cell Carcinoma|Squamous cell carcinoma]]''':seen in geldings.
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#Squamous cell carcinoma:seen in geldings.
 
Less common in bulls and dogs, low-grade malignancy may ulcerate and haemorrhage.
 
Less common in bulls and dogs, low-grade malignancy may ulcerate and haemorrhage.
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* '''[[Melanoma]]''':occurs on prepuce and scrotum of grey horses.  Often benign.
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#Melanoma:occurs on prepuce and scrotum of grey horses.  Often benign.
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* '''Transmissible venereal tumour''':seen in dogs and bitches.
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#Transmissible venereal tumour:seen in dogs and bitches.
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* '''[[Sarcoids]]''':equine prepuce
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#Sarcoids:equine prepuce
  
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{{Learning
 
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|flashcards = [[Small Animal Soft Tissue Surgery Q&A 05]]}}
 
  
 
Information by kind permission of Professor R W Else
 
Information by kind permission of Professor R W Else
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[[Category:To Do - Reproductive]]
 
[[Category:To Do - Reproductive]]
 
[[Category:Male Reproductive System - Pathology]]
 
[[Category:Male Reproductive System - Pathology]]

Revision as of 19:49, 12 April 2011

Pathology of external genitalia

  • CONGENITAL ANOMALIES OF PENIS
  1. Absence of penis:usually seen only as part of a major whole-body malformation.
  2. Micropenis:seen in bulls (malformation of sigmoid flexure). Also some dogs.
  3. Persistent penile frenulum:bulls and dogs. Associated with cork screw or deviation of penis.


  • CONGENITAL ANOMALIES OF THE PREPUCE
  1. Absence or agenesis:may be associated with pseudo-hermaphroditism.
  2. Absence of preputial orifice:seen in pups.
  3. Phimosis:small preputial orifice, penis cannot be extruded from prepuce.

(Paraphimosis - prepuce can be drawn behind the glans but cannot return after erection).

  1. Hypospadias/epispadius:failure of anatomical closure of prepuce and/or urethra.


  • INFLAMMATION
  1. Posthitis:inflammation of prepuce
  2. Balanitis:Inflammation of glans penis
  3. Balanoposthitis:usual for both to be involved


Dogs:suppuration and/or ulceration due to E. coli, Proteus or Haemophilus spp.
Bulls:IBR virus causes ulceration which may become secondarily infected.
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
  1. Transmissible fibropapilloma:seen in bulls, bovine papillomavirus type 2.

Multiple luxuriant growths, painful, easily traumatised. Transmissible to females. Spontaneous regression.

  1. Squamous cell carcinoma:seen in geldings.

Less common in bulls and dogs, low-grade malignancy may ulcerate and haemorrhage.

  1. Melanoma:occurs on prepuce and scrotum of grey horses. Often benign.
  2. Transmissible venereal tumour:seen in dogs and bitches.
  3. Sarcoids:equine prepuce


Information by kind permission of Professor R W Else

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