Peer-reviewed veterinary case report
Case of calcifying epithelial odontogenic tumour in a dog.
- Journal:
- The Journal of small animal practice
- Year:
- 1996
- Authors:
- Ishikawa, T & Yamamoto, H
- Affiliation:
- Ushiku Animal Hospital · Japan
Plain-English summary
A 12-year-old male shih tzu was found to have a calcifying epithelial odontogenic tumor, which is a type of growth in the jaw. The dog's owners had noticed a lump on the right side of his jaw about a year and a half before he was diagnosed. After taking X-rays, the veterinarian performed surgery to remove part of the jaw, thinking it might be a different type of tumor called osteosarcoma. A closer examination of the tissue confirmed the diagnosis of the calcifying tumor, and thankfully, there was no sign of it coming back a year after the surgery. Unfortunately, the dog was later put to sleep due to a different health issue related to breathing, but the tumor itself did not return.
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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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/8981283/