Mycobacterium iranicum pulmonary disease in an elderly patient with extensive usual interstitial pneumonia: Case report.

We report the first case of Mycobacterium iranicum pulmonary disease in an elderly patient with extensive usual interstitial pneumonia and traction bronchiectasis. He was treated with oral doxycycline, ciprofloxacin, and sulfamethoxazole/trimethoprim daily for 9 months. This was associated with eradication of the microorganism in the sputum and steady weight gain.