Oncocytic Schneiderian Papilloma of the Maxilla; The report of a Case with evident malignant Foci

Abstract

Schneiderian papillomas (SPs) are benign tumors found in the Sino-nasal tract. They present tendency to recur and have been reported to be associated with malignancy in approximately 4-17% of the cases.We hereby report a case of SP showing dysplastic changes rendering it premalignant.In the present case resection of the tumor was done after an endoscopic in scional biopsy was taken earlier and was diagnosed as Schneiderian papilloma with malignant foci.The present report might improve the understanding of the sino-nasal papillomas and consider putting them in the differential diagnosis of maxillary sinus tumors of aggressive behavior which may extend intra-orally and reach the roots of the teeth.