Congenital granular cell epulis causing polyhydramnios.

We report a case of an extremely large granular cell epulis situated on the maxillary alveolar ridge of a newborn. It obstructed the infant's mouth and caused polyhydramnios. The lesion was detected in utero by ultrasonography and removed after birth in the delivery room, with satisfactory results. It is evident that the epulis increased in size during the last phase of pregnancy. The literature concerning this peculiar lesion is reviewed and theories of histogenesis are discussed.