Peer-reviewed veterinary case report
Squamous cell carcinoma originating from an epithelial scar in a horse.
- Journal:
- Journal of the American Veterinary Medical Association
- Year:
- 1990
- Authors:
- Baird, A N & Frelier, P F
- Affiliation:
- Department of Large Animal Medicine and Surgery · United States
- Species:
- horse
Plain-English summary
A Quarter Horse stallion developed a lump in his left hindquarters after receiving an injection of antihistamine. The area healed but left behind a lot of scar tissue and some ongoing tissue growth. For two years, the lump didn’t change much, but then it started to grow larger over the next six months. A biopsy revealed that the growth was squamous cell carcinoma, a type of skin cancer. Sadly, six months later, the horse had lost weight and the lump continued to grow, leading to the decision to euthanize him.
Abstract
A Quarter Horse stallion developed an abscess over the left gluteal region after an IM injection of antihistamine. The wound healed with considerable fibrous scarring and some persistent granulation tissue. The lesion was static for 2 years before the granulation tissue went through a 6-month period of progressive enlargement. At that time, histopathologic diagnosis of squamous cell carcinoma was made from excisional biopsy. Six months after diagnosis, the horse had lost body weight and the lesional diameter had further increased, so the horse was euthanatized.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/2365626/