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J Am Vet Med Assoc. 1993 Mar 1;202(5):776-8.

Episodic scrotal mutilation with concurrent bilateral sperm granuloma in a dog.

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Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames 50011-1250.


Bilateral sperm granuloma with diffuse spermatocele was found to be the cause of infertility in a young Golden Retriever. Anamnesis indicated that the dog had intermittent episodes of self-inflicted ulcerative scrotal dermatitis, beginning when it was 4 to 5 months old and regardless of season or environment. A complete breeding soundness examination produced consistently azoospermic ejaculates in the presence of bilaterally firm, distinct swellings of the epididymides. Because of the poor reproductive prognosis, the owner requested castration and scrotal ablation. Although scrotal trauma was initially thought to be associated with the onset of sperm granuloma formation, evaluation of the history and physical examination and laboratory findings indicated that a bilateral congenital anomaly was the most likely cause of infertility.

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