Male pseudohermaphroditism in dogs: three case reports

M.R. Alam, Y.G. Cho, S.J. Cho, J.I. Lee, H.B. Lee, H.J. Tae, I.S. Kim and N.S. Kim
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M.R. Alam: College of Veterinary Medicine,
Y.G. Cho: Medical School, Chonbuk National University, Jeonju, Republic of Korea
S.J. Cho: Family Animal Medical Clinic, Gunsan, Republic of Korea
J.I. Lee: College of Veterinary Medicine,
H.B. Lee: College of Veterinary Medicine,
H.J. Tae: College of Veterinary Medicine,
I.S. Kim: College of Veterinary Medicine,
N.S. Kim: College of Veterinary Medicine,

Veterinární medicína, 2007, vol. 52, issue 2, 74-78

Abstract: Three Cocker Spaniel dogs, 2-3 months old, weighing 3-4 kg, were presented to the Chonbuk Animal Medical Centre, Chonbuk National University, with intersex anomalies. Physical, radiological, gross, histological, hormonal and cytogenetic studies were performed. Physical examination of the external genitalia revealed that the dogs possessed the vulva with an enlarged clitoris protruding from the vulvar juncture and the scrotum with an undescended testis in Case 1 and 2, and both testes remained undescended in Case 3. Hyperoestrogenaemia and low testosterone serum concentrations were found. Laparotomy revealed persistent Mullerian ducts (PMD) in Case 1 and 2, and abdominally located testicle(s) in all the cases. Histological examinations of the gonads revealed inactive seminiferous tubules. Cytogenetic analysis showed 78XY male karyotype in Case 1 and 2, whereas Case 3 showed 79XX female karyotype. The congenital defects were diagnosed as male pseudohermaphroditism (MPH) and PMD in Case 1 and 2, and XX sex reversal MPH in Case 3.

Keywords: male pseudohermaphroditism; XX sex reversal; persistent Mullerian duct; dog (search for similar items in EconPapers)
Date: 2007
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DOI: 10.17221/2056-VETMED

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