The hidden antral compartment.

Abstract

Two patients with rare isolated posterior antral compartments are presented. In both cases, the radiologist directed the surgeon to these clinically hidden recesses. The radiographic appearance included a walled-off compartment filled with material of soft-tissue density; clinical importance is discussed.

A rare presentation of a mucocele in a separate compartment of maxillary sinus

“…6 While the previously reported case had a history of a preceding facial trauma, our case shows no history of facial trauma. Another two cases of separate maxillary antral mucocele located posteriorly to the main maxillary sinus compartment were reported by Som et al 7 The authors interpreted this radiographic finding as "sinus within a sinus. "…”

Diseases of the Sinuses

“…Knowledge of the incidence and morphology of maxillary sinus septa has clinical implications especially in sinus lift operations performed preparatory to the placement of dental implants [ 164 ]. In rare cases, separate cavities can exist in the posterior part of the sinus, which can be a source of persistent infection [ 165 ].…”

Compartmentalized maxillary sinus mucocele

“…Congenitally compartmentalized maxillary antrum is a recognized condition (Som et al, 1984). Mucoceles forming in the two compartments are extremely rare, with only three cases having been reported (Yue et al, 1994).…”