Endoscopic view of bilateral maxillary sinus cysts removed with a powered instrument

     A patient presented with a history of recurring maxillary sinusitis and nasal congestion. He had experienced a nasal fracture 20 years previously that had not been surgically repaired. Examination revealed poor nasal airways, with a septal deflection and obstruction on the right side and hypertrophic inferior and middle turbinates in the left airway. Computed tomography (CT) of the sinuses confirmed the nasal findings and also detected the presence of large maxillary sinus cysts bilaterally (figure, A).