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Peer-reviewed veterinary case report

Dog has a mass on jaw - what is a calcifying epithelial odontogenic

By Ishikawa, T & Yamamoto, H·Published in The Journal of small animal practice·1996·Ushiku Animal Hospital, Japan·View original on PubMed

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Original publication title: Case of calcifying epithelial odontogenic tumour in a dog.

Canine mammary tumorsMovement & joints

Plain-English summary

A 12-year-old male shih tzu was found to have a tumor on his jaw that had been growing for a year and a half. After taking X-rays, the vet initially thought it might be a type of bone cancer and performed surgery to remove the tumor. The lab results showed it was a calcifying epithelial odontogenic tumor, which is a rare type of growth. Although the tumor did not come back after surgery, the dog was sadly euthanized later due to a different health issue related to his throat.

People also search for: dog jaw tumor treatment · shih tzu mouth mass · calcifying epithelial odontogenic tumor in dogs

Abstract

A 12-year-old male shih tzu dog was diagnosed as having a calcifying epithelial odontogenic tumour. One and a half years prior to presentation, a mass was noticed on the right mandible by the owners. Radiography revealed irregular, faintly radiopaque material within the tumour. A right hemimandibulectomy was performed, based on the clinical diagnosis of osteosarcoma. Histopathological evaluation of the mandibular mass showed that it was composed of a polyhedral odontogenic epithelial cell nest, fibrous stroma, homogeneous eosinophilic material and rounded calcifying material. The eosinophilic material was visualised by staining with Congo red, and observed under green birefringence by polarisation microscopy. Although the tumour had not recurred 12 months after surgery, the dog was euthanased because of aspiratic pharyngitis. The literature on the clinical behaviour of calcifying epithelial odontogenic tumours in dogs and cats is reviewed.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/8981283/