Table 1. ATS/IDSA criteria for the diagnosis of non-tuberculous mycobacterial lung disease [1].

Clinical (both 1 and 2 required):

(1) Pulmonary symptoms, nodular or cavitary opacities on CXR or high-resolution CT that shows multifocal bronchiectasis with multiple small nodules

And

(2) Appropriate exclusion of other diagnoses

Microbiologic (either 1,2, or 3):

(1) Positive culture from ≥ separate expectorated sputum samples

Or

(2) Positive culture from ≥ bronchial wash or lavage

Or

(3) Biopsy with mycobacterial histopathologic features and positive culture for NTM or biopsy showing mycobacterial histopathologic features and ≥1 sputum or bronchial washings that are culture positive for NTM