Case report: 66 year-old man with recurrent pneumonias and sinusitis.

A current myth is that Cystic Fibrosis (CF) is a disease of childhood. However, among adults with CF, 64% are between the ages of 18 and 29 years of age; 25% are between 30 and 39 years of age; 10% are between 40 and 49 years old; and 2% are 50 years of age. We report a case of a 66 year-old male with newly diagnosed cystic fibrosis after a history of recurrent pneumonias and sinusitis, with acute exacerbation of Chronic Obstructive Pulmonary Disease (COPD). Physicians must maintain a high index of suspicion to make the diagnosis of cystic fibrosis in elderly presenting with COPD exacerbation and recurrent pneumonias and sinusitis.