A misdiagnosed giant dentigerous cyst involving the maxillary antrum and affecting the orbit. Case report.

A case report of gigantic, previously misdiagnosed dentigerous cyst is presented. The cyst originated from an impacted upper right cuspid and its expansion involved the whole of the right maxillary sinus, the orbital floor and the lateral wall of the nose. The extent of the expansion was highlighted by the injection of contrast medium.