MAC is the most commonly found form of NTM. Immunodeficiency is not a requirement for MAI. MAC usually affects patients with abnormal lungs or bronchi. However, Jerome Reich and Richard Johnson describe a series of six patients with MAC<unk>  of the right middle lobe or lingula who did not have any predisposing lung disorders. The right middle lobe and lingula of the lungs are served by bronchi that are oriented downward when a person is in the upright position. As a result, these areas of the lung may be more dependent upon vigorous voluntary expectoration (cough) for clearance of bacteria and secretions. Since the six patients in their retrospective case series were older females, Reich and Johnson proposed that patients without a vigorous cough may develop right middle lobe or left lingular<unk>  with MAC. They proposed this syndrome be named Lady Windermere syndrome, after the character Lady Windermere in Oscar Wilde's play Lady Windermere's Fan. However, little research has confirmed this speculative cause.
Mycobacterium avium-intracellulare infection
Extrapulmonary tuberculosis
Chronic pulmonary aspergillosis
Primary inoculation tuberculosis
Allergic bronchopulmonary aspergillosis
Multidrug-resistant tuberculosis
Pseudomonas infection
Tuberculosis