Peer-reviewed veterinary case report
Oral tumors found in two adult cats with different growth patterns
By Bock, P et al.·Published in Veterinary pathology·2011·Department of Pathology, Germany·View original on PubMed →
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Original publication title: Oral masses in two cats.
- Species:
- cat
Plain-English summary
A 5-year-old male domestic shorthair cat was found to have a growth in its mouth, which led to a biopsy. The tests revealed that he had an amyloid-producing odontogenic tumor, a type of tumor that affects the teeth and jaw. Another adult cat also had a similar tumor but with different characteristics. Both cats had tumors that required careful examination, and while the specific treatment details weren't mentioned, these types of tumors often require surgical removal. It's important for pet owners to monitor any unusual growths in their cats' mouths and consult a veterinarian for evaluation.
People also search for: cat mouth tumor · cat oral mass treatment · why is my cat drooling · cat dental growth symptoms
Abstract
Incisional biopsies from the oral cavity of 2 adult cats were submitted for histological investigation. Cat No. 1 showed a solitary well-circumscribed neoplasm in the left mandible. Cat No. 2 demonstrated a diffusely infiltrating neoplasm in the left maxilla. Both tumors consisted of medium-size epithelial cells embedded in a fibrovascular stroma. The mitotic index was 0 to 1 mitosis per high-power field. The epithelial cells showed an irregular arrangement forming nests or streams in cat No. 1, whereas a palisading growth was noted in cat No. 2. Both tumors, especially that of cat No. 1, showed multifocal accumulations of amyloid as confirmed by Congo red staining and a distinct green birefringence under polarized light, which lacked cytokeratin immunoreactivity as well as and AL and AA amyloid immunoreactivity. In addition, the amyloid in cat No. 2 was positive for the odontogenic ameloblast-associated protein, formerly termed APin. In sum, both cats suffered from an amyloid-producing odontogenic tumor, but their tumors varied with respect to morphology and type of amyloid produced.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/21285384/