Axial CT scan of a young patient with CF. Hypoplastic maxillary sinuses are seen bilaterally. Both maxillary sinuses are completely opacified with bulging medial walls. This picture of complete ...

most often the maxillary sinus. [19] Presentation is typically an incidental finding on the CT scan of the head or sinuses or dental x-rays, which shows opacification with areas of hyperdensity ...