Pulmonary Mycobacterium avium complex infection


Changes in the right upper lobe are those of old TB with no evidence to suggest reactivation. The significant finding is the multiple lung nodules, some cavitating, with some bronchiectasis. These findings alone do not conclusively prove MAC, however in an elderly patient with the appropriate clinical presentation, (e.g. SOB over months, fevers and usually weight loss) then a radiologist can be confident that the diagnosis is MAC.