Inferior concha bullosa--a radiological and clinical rarity

Two cases of inferior concha bullosa (ICB) are reported. The condition was bilateral in one patient and unilateral in the other. Unilateral ICB was associated with marked septal deviation. The diagnosis was made in patients being investigated for chronic rhinosinusitis. ICB is diagnosed by computed tomography (CT) of the sinuses in the coronal plane. It may also be seen in axial views.