Peer-reviewed veterinary case report
Ambiguous genitalia in 8-month-old male Labrador with testicles
By Wernham, B G J & Jerram, R M·Published in New Zealand veterinary journal·2006·Veterinary Specialist Group·View original on PubMed →
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Original publication title: Male pseudohermaphroditism in a Labrador Retriever, and a review of mammalian sexual differentiation.
- Species:
- dog
Plain-English summary
An 8-month-old male Labrador Retriever was brought to the vet because he had unclear external genitalia. During the examination, the vet found an enlarged clitoris and a mass under the skin, along with an undescended testicle inside his abdomen. Surgery was performed to remove the abnormal tissue and the hidden testicle. Tests confirmed he had a typical male chromosome pattern, leading to a diagnosis of male pseudohermaphroditism, a rare condition where a dog has both male and female characteristics. After treatment, the dog was diagnosed and managed appropriately.
People also search for: Labrador ambiguous genitalia · male pseudohermaphroditism in dogs · dog testicle surgery
Abstract
CASE HISTORY: An 8-month-old Labrador Retriever was referred with a history of ambiguous external genitalia. CLINICAL FINDINGS AND TREATMENT: Clitoromegaly within apparent vulval folds, and an adjacent subcutaneous mass were noticed on external examination. An intra-abdominal testicle, with epididymis and suspected vas deferens ducts, was found during exploratory celiotomy. Incision over the subcutaneous mass revealed the accompanying testicle. Clitoridectomy was performed and an os clitoris removed. Normal juvenile testes were diagnosed on histology of the gonads. Chromosomal studies revealed a normal 78, XY male chromosomal constitution. Due to the combination of a male karyotype (78, XY), the presence of testicular tissue in the gonads, and the appearance of the external genitalia, a diagnosis of male pseudohermaphroditism (MPH) was made. CLINICAL RELEVANCE: This case presents the first report of MPH in a Labrador Retriever, and highlights the diagnostic steps recommended when confronted with a dog with ambiguous external genitalia.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/17028664/