Cerebral abscess as a complication of cystic fibrosis.

Two male patients with cystic fibrosis (CF), both 18 years old, developed frontal lobe brain abscesses. Both patients presented with histories of intermittent headache over several days and occasional vomiting. Headache was not more evident in the mornings and not associated with visual disturbance in either patient. Neither was hypertensive nor had visual disturbance. Both patients had documented pansinusitis and nasal polyposis. Both men had had few admissions for pulmonary exacerbations, and neither was significantly malnourished. The abscess in neither patient grew Pseudomonas species.