The use of the polymerase chain reaction for Mycobacterium tuberculosis test using endobronchial ultrasound-guided transbronchial needle aspiration was effective in diagnosing intrathoracic granulomatous lymphadenopathy, even among some patients with non-diagnostic results, according to recent research.

Patients with multidrug-resistant tuberculosis are more likely to have developed the disease through incidence transmission, rather than a new treatment-related acquisition, according to recent research published in The Lancet.