Peer-reviewed veterinary case report
Two rare cutaneous neoplasms in horses: apocrine gland adenocarcinoma and carcinosarcoma.
- Journal:
- The Cornell veterinarian
- Year:
- 1990
- Authors:
- Anderson, W I et al.
- Affiliation:
- Department of Pathology · United States
- Species:
- horse
Plain-English summary
In this study, two rare skin tumors were found in horses: one in a 17-year-old pony and another in a 14-year-old mare. The pony had a tumor called apocrine gland adenocarcinoma, located on its prepuce (the area around the penis), which showed some signs of growth but did not invade nearby blood or lymph vessels. The mare had a carcinosarcoma, a more complex tumor found on her right side, which had two different types of cells that looked quite different from each other. The details of the treatment and outcomes for these cases were not provided, so we can't say how well the horses responded to any treatment.
Abstract
Two rare equine cutaneous neoplasms, an apocrine gland adenocarcinoma and a carcinosarcoma were diagnosed in a 17-year-old pony and a 14-year-old mare, respectively. The apocrine gland adenocarcinoma was present on the prepuce. Histologically, papillary projections of low cuboidal to columnar epithelial cells were generally well differentiated, and surrounded dilated acini. Stromal invasion was present, but vascular and lymphatic invasion was not seen. The carcinosarcoma was present in the right flank of the mare. Two discrete cell populations were characterized histologically. One portion of the mass was composed of elongated, loosely arranged mesenchymatous cells; the second population consisted of dense sheets of pleomorphic, basophilic cells forming irregular acini.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/2209014/