Two maxillary lesions containing bony/calcified shells

Abstract

Because of the close anatomical relationship between the maxillary sinus and the adjacent dental region, determining the primary site of cysts in these regions can be a diagnostic dilemma. In this article, two cases with similar radiological findings are presented. These cases had lesions involving the maxillary sinus and the adjacent alveolar process; the lesions were surrounded with egg-shaped, linear opacities. Diagnoses of a residual radicular cyst in one case and a calcified mucocoele (which is very rare) in the other case were predicted with the help of radiological findings and were confirmed surgically and histopathologically.

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

“…A case of a cystic lesion in the maxillary antrum enclosed within a calcified bony shell has been presented, which is an unusual presentation of an antral cyst. 8 We can follow a simple guideline for radiologic diagnosis: if the superior border of any cystic lesion is the inferior wall of the maxillary antrum then lesion is mostly of extrinsic origin, possibly odontogenic but when the lesion is above the floor of the antrum it is more likely to be an intrinsic sinus pathology like a pseudocyst, retention cyst, pseudocoele or a surgical maxillary cyst.…”