Medical palatine cyst and maxillary antral osteoma: report of an unusal case.

A case is presented of a patient with the coincidental occurrence of two unusual lesions, median palatine cyst and osteoma of the maxillary antrum. There was no atypia of either lesion, but this combination led to the impression that the median palatine cyst had eroded into the maxillary antrum. Both lesions are usually asymptomatic and were incidental findings in this case. An occlusal radiograph is best for showing the palatal radiolucent area and is usually diagnostic. The preferred treatment for median palatine cyst is enucleation; a palatal splint is an excellent aid for reapproximation of the mucoperiosteal flap. The maxillary antrum was explored to obtain a biopsy specimen for a microscopic diagnosis of the radiopaque lesion; this proved to be an osteoma. The diagnosis of an osteoma is an indication for a radiographic survey to rule out Gardner syndrome, which has serious implications.