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Category:Testicles - Developmental Pathology (view source)
Revision as of 19:35, 12 April 2011
, 19:35, 12 April 2011Created page with "Testicular Agenesis is rare. Cryptorchidism *TESTICULAR HYPOPLASIA Maybe spontaneous or associated with intersex or cryptorchidism. Can occur in all species. Is confined..."
Testicular Agenesis is rare.
[[Cryptorchidism]]
*TESTICULAR HYPOPLASIA
Maybe spontaneous or associated with intersex or cryptorchidism. Can occur in all species.
Is confined to descended testicles (cf. cryptorchid testes).
May be bilateral and/or unilateral.
Usually detected at or after puberty because of lowered / lack of fertility.
Development of accessory genitalia is normal, i.e. hormone secretion unimpaired.
Aetiology:
#Genetic factors:sex-linked autosomal recessive gene (Swedish Red cattle).
#Environmental factors:Zn deficiency,ecological/organo-phosphorous compounds?
#Hormonal factors:endocrine deficiency.
#Chromosomal abnormalities:XXY Klinefelters syndrome - all species. Male tortoiseshell cats (XXY).
Gross:small, freely movable in scrotum.
<br>Histologically:mild (<50% of tubules hypoplastic) to severe, seminiferous tubules small lined by Sertoli cells only. No significant inflammatory reaction
Information by kind permission of Professor R W Else
[[Category:Testicles - Developmental Pathology]]
[[Category:To Do - Reproductive]]
[[Category:Reproductive System - Developmental Pathology]]
[[Category:Male Reproductive System - Pathology]]
[[Cryptorchidism]]
*TESTICULAR HYPOPLASIA
Maybe spontaneous or associated with intersex or cryptorchidism. Can occur in all species.
Is confined to descended testicles (cf. cryptorchid testes).
May be bilateral and/or unilateral.
Usually detected at or after puberty because of lowered / lack of fertility.
Development of accessory genitalia is normal, i.e. hormone secretion unimpaired.
Aetiology:
#Genetic factors:sex-linked autosomal recessive gene (Swedish Red cattle).
#Environmental factors:Zn deficiency,ecological/organo-phosphorous compounds?
#Hormonal factors:endocrine deficiency.
#Chromosomal abnormalities:XXY Klinefelters syndrome - all species. Male tortoiseshell cats (XXY).
Gross:small, freely movable in scrotum.
<br>Histologically:mild (<50% of tubules hypoplastic) to severe, seminiferous tubules small lined by Sertoli cells only. No significant inflammatory reaction
Information by kind permission of Professor R W Else
[[Category:Testicles - Developmental Pathology]]
[[Category:To Do - Reproductive]]
[[Category:Reproductive System - Developmental Pathology]]
[[Category:Male Reproductive System - Pathology]]