Peer-reviewed veterinary case report
Horse has multiple skin lumps in perineum - what could it be?
By Bailey, Keith L et al.·Published in Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·2003·Veterinary Diagnostic Laboratory and Department of Veterinary Pathobiology, United States·View original on PubMed →
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Original publication title: Multiple cutaneous leiomyomas in the perineum of a horse.
- Species:
- horse
Plain-English summary
A 14-year-old Saddlebred stallion developed several small lumps in the area around his rear end over about five years. These lumps were between 3 and 9 millimeters in size and did not cause any pain or itching. The veterinarians surgically removed three of the lumps for further examination, which showed they were made up of muscle cells. This type of tumor, called multiple cutaneous leiomyomas, has not been seen in horses before. The treatment involved surgery, and while the outcome of the surgery isn't specified, the findings suggest these tumors are benign.
Abstract
Multiple cutaneous masses developed in the perineum of a 14-year-old Saddlebred stallion over a period of approximately 5 years. Clinically, the masses ranged in size from 3- to 9-mm diameter and were not ulcerated, painful, or pruritic. Three of the masses were surgically excised and submitted for microscopic evaluation. The masses were dome shaped to nodular, located in the superficial dermis, and composed of haphazardly arranged bundles of plump spindle-shaped cells. The tumor cells immunoreacted with monoclonal antibodies directed against desmin, muscle-specific actin, and smooth muscle actin, confirming a smooth muscle origin. Multiple cutaneous leiomyomas have not been reported previously in horses.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/14535545/