Histopathologic Diagnoses From Biopsies of the Oral Cavity in 403 Dogs and 73 Cats

This retrospective study documents the prevalence of various histopathological diagnoses within a practice specializing in veterinary dentistry and oral surgery. Histopathology results obtained from biopsies of oral lesions from 403 dogs and 73 cats were sorted and categorized. Lesions of inflammatory origin represented the most common histopathology result in cats (n = 37; 51%), followed by squamous cell carcinoma (n = 27; 37%). The most common histopathological diagnoses in dogs were malignant neoplasms (n = 151; 37%), followed by tumors of odontogenic origin (n = 138, 34%) and lesions of inflammatory origin (n = 114; 28%). The results of this study are representative of a private referral dentistry practice and are compared to other studies that assessed common oral neoplasia diagnoses in dogs and cats. Treatment options and prognoses of the most common canine and feline neoplasms are discussed.