Amyloid-Producing Odontogenic Tumor in a Cat

Abstract

A 15-year-old, male, domestic shorthair cat had developed a gingival mass near the first premolar of the cheek side of the left maxilla. Macroscopically, the tumor was not demarcated and its color was the same as gingiva. Histopathologically, the tumor consisted of sheets or cords of neoplastic odontogenic cells, which were positive for cytokeratin. A direct fast scarlet-positive amyloid deposit existed along the proliferation of neoplastic cells, and calcification was also observed. The present case was diagnosed as an amyloid-producing odontogenic tumor.