Maxillary sinus mucocele. Report of an unusual case.

The maxillary sinus mucocele occupying the entire sinus is rarely reported by dentists. This article discusses one such case diagnosed as an exceptionally large maxillary sinus cyst occupying the whole sinus. Unlike their findings in the medical literature, the authors were unable to find many similar cases reported in the dental literature. The location of these mucoceles necessitates the use of diagnostic radiographs, especially those of the panoramic type. Because etiology is still not fully understood after almost 100 years, the authors suggest and discuss four possible mechanisms of sinus mucocele formation and growth.