Brain abscess and cystic fibrosis.

Brain abscess has only recently been considered a complication of cystic fibrosis. 
Three patients are reported here and a fourth cited from the 
literature. All of our patients were young adults with advanced pulmonary 
disease. The bacteria involved were mouth organisms and were found in 
the sputum culture in only one of the patients. Resistance was 
present to previously given antibiotics. As patients with cystic fibrosis survive 
into adulthood, the risk of developing a brain abscess appears to 
increase. 