Calcified shell in the maxillary antrum: An interesting imaging characteristic of an antral cyst

The proximity of the maxillary antrum to the maxillary alveolus and teeth leads to many antral lesions being diagnosed by an oral physician. Antral lesions may be intrinsic pathologies arising from the sinus mucosa itself or as a result of extrinsic odontogenic or non-odontogenic lesions arising from the maxillary alveolus or teeth. We present an interesting case of a 41-year-old lady with a maxillary swelling which clinically appeared as a maxillary cyst, radiologically as a calcified shell in the antrum and eventually the histology showed it was a maxillary antral cyst.