A peculiar complication in Le Fort I osteotomy.

In two cases of routine Le Fort I osteotomy in secondary cleft palate surgery, a swelling noted in the antral mucosa was biopsied. In both cases, histological examination resulted in a diagnosis of odontogenic myxoma. After analysis of the radiographs, it was concluded that the biopsies were taken from displaced tooth germs. The close histological similarity between myxoma on the one hand and dental papilla tissue, a thickened tooth follicle and a thickened or polypoid antral mucosal lining on the other is discussed.