Figure 1.

Computed tomography images of two obstructive sleep apnoea (OSA) patients requiring continuous positive airway pressure (CPAP) with nasal pathology. (A,B) Coronal and axial slices of the first patient demonstrating a left sided polyp occluding part of the post nasal space, maxillary sinus disease and a slightly deviated septum to the left; (C,D) coronal and axial images of a second patient demonstrating extensive sinonasal polyposis, which ultimately failed medical management and required endoscopic sinus surgery.