Difference between revisions of "Male External Genitalia - Pathology"
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* '''[[Ulcerative Balanoposthitis|Balanoposthitis]]''':usual for both to be involved | * '''[[Ulcerative Balanoposthitis|Balanoposthitis]]''':usual for both to be involved | ||
| − | Dogs:suppuration and/or ulceration due to [[Escherichia coli|E. coli]], [[Proteus|Proteus]] or [[Haemophilus species|Haemophilus spp]]. | + | Dogs:suppuration and/or ulceration due to ''[[Escherichia coli|E. coli]], [[Proteus|Proteus]]'' or [[Haemophilus species|''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. | ||
===Neoplasia=== | ===Neoplasia=== | ||
| − | * '''[[Bovine Papillomaviruses|Transmissible fibropapilloma]]''':seen in bulls, bovine papillomavirus type 2. | + | * '''[[Bovine Papillomaviruses|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. | ||
* '''[[Squamous Cell Carcinoma|Squamous cell carcinoma]]''':seen in geldings. | * '''[[Squamous Cell Carcinoma|Squamous cell carcinoma]]''':seen in geldings. | ||
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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]] | ||
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Latest revision as of 13:41, 7 November 2011
Pathology of external genitalia
Congenital abnormalities of the 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 abnormalities 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
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
- 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
| Male External Genitalia - Pathology Learning Resources | |
|---|---|
 Test your knowledge using flashcard type questions |
Small Animal Soft Tissue Surgery Q&A 05 |
Information by kind permission of Professor R W Else