Simultaneous hyperplasia, metaplasia, and neoplasia in an 8 year-old boxer dog: a case report

Generalized gingiva hyperplasia and multiple gingival masses were observed in an 8 year-old boxer dog. The masses were removed surgically. Three of them were biopsied. Microscopic examination was reported as fibrous gingival hyperplasia, fibrous epulis with osseous metaplasia, and mast cell tumor. Twenty-two months following surgery, moderate generalized gingival hyperplasia was present, with no clinical evidence of regrowth of the neoplasms.