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Peer-reviewed veterinary case report

Tumor found in testicle of 7-year-old horse

By Johnson, R C & Steinberg, H·Published in Journal of comparative pathology·1989·Department of Veterinary Pathology, United States·View original on PubMed

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Original publication title: Leiomyoma of the tunica albuginea in a horse.

Species:
horse

Plain-English summary

During a routine castration of a 7-year-old Arabian stallion, a growth called a leiomyoma (a type of tumor made up of smooth muscle cells) was discovered on the left testicle. This tumor was made up of tangled groups of muscle cells that were not arranged in a typical pattern and were attached to the outer covering of the testicle. The findings suggest that the tumor was benign, meaning it was not cancerous.

Abstract

A leiomyoma of the left testicle was found in a 7-year-old Arabian stallion at routine castration. The neoplasm consisted of interlacing bundles of well-differentiated, haphazardly arranged, smooth muscle cells attached superficially to the tunica albuginea.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/2760279/