Diagnosis: FELINE INDUCTIVE ODONTOGENIC TUMOR (FIOT)
Cause: NEOPLASTIC

Feline, mixed-breed, 4-months-old, male. This patient had a oral mass that was radiolucent and multicavitary on the radiographic examination. Odontogenic tumors in domestic animals can be divided mainy into 4 groups: 1) tumors of the odontogenic epithelium with odontogenic mesenchyme; 2) tumors of the odontogenic epthelium without odontogenic mesenchyme; 3) turmos composed of primarily odontogenic mesenchyme; 4) Tumors derived from the periodontal ligament. FIOT´s occurs most commonly in young cats of either sex mainly in the rostral maxilla. FIOT belongs to group 1 (odontogenic epithelium + mesenchyme) and have inductive properties, i.e. the ability to induce mesenchymal cells to form aggregates of dental pulp-like cells. These tumors have very specific properties which allows it to be classified as separate tumors. The presence of “spherical condensations of fibroblasts, resembling dental papilla, within the connective tissue stroma,” felt to be unique for these feline tumors. There is no sufficient information concerning it biological behaviour. References: 1.Cynthia M. Bell & Jason W. Soukup. Nomenclature and Classification of Odontogenic Tumors - Part II:Clarification of Specific Nomenclature. J Vet Dent Vol. 31 No.4, 2014.

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