Peer-reviewed veterinary case report
Cat passed a bone tumor through the anus after straining to poop
By Rissi, Daniel R.·Published in Brazilian Journal of Veterinary Pathology·2024·View original on Crossref →
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Original publication title: Spontaneous anal expulsion of an osteosarcoma in a cat
- Species:
- cat
Plain-English summary
A 6-year-old spayed female domestic short hair cat was having trouble defecating and experienced a partial rectal prolapse. After a month of these symptoms, a firm nodule was expelled from her anus, which was later identified as an osteosarcoma (a type of bone cancer). Unfortunately, the cat was euthanized, and no further examination was done. This case is unusual, as it appears the cancerous growth detached from its original site and came out through the anus, a rare occurrence in veterinary medicine.
People also search for: cat straining to defecate · cat rectal prolapse · cat cancer symptoms · osteosarcoma in cats · cat euthanasia options
Abstract
A 6-year-old spayed female domestic short hair cat was evaluated because of a 1-month history of straining to defecate and partial rectal prolapse, with expulsion of a 1 cm in diameter, white-to-red, firm-to-hard, homogenous nodule from the anus. The nodule was collected by the submitting veterinarian and submitted for histologic examination. Histologic features were consistent with an osteosarcoma. The cat was euthanized, and no autopsy was performed. Although the origin of the osteosarcoma could not be determined, the clinical history was suggestive of a lower gastrointestinal tract osteosarcoma that detached from its primary site and exited through the anus, similar to what is rarely reported for intestinal polyps and lipomas in human medicine. No reports of such event were found in veterinary medicine.
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Search related cases →Original publication on Crossref: https://doi.org/10.24070/bjvp.1983-0246.v17i1p58-59