Recurrent Nocardia pneumonia in an adult with chronic granulomatous disease.

The diagnosis of chronic granulomatous disease was made for the first time in a young adult when he presented with Nocardia asteroides pneumonia. Treatment with trimethoprim/sulfamethoxazole for 10 wk brought about an apparent cure of the infection. Two and one half years later N. asteroides pneumonia recurred and resulted in death from respiratory failure. Antibiotic susceptibility studies suggested that both episodes were caused by the same organism. This suggestion was supported by endonuclease restriction analysis, which showed that the plasmids from both Nocardia isolates were identical. Late recurrence of pneumonia caused by N. asteroides occurs only rarely. In this patient, recurrent infection appeared to be related to persistence of colonizing organisms in the host.