that has extended to erode the hard palate (solid arrow). Also note the abnormal sclerosis in the hard palate on the right side (dashed arrow). (B) Left maxillary sinus adenoid cystic carcinoma ...

Many patients with chronic sinusitis will have nasal exams ... an unobstructed view of the maxillary sinuses. It is taken in an upright position to better identify fluid levels, if present.) ...