“…10,12,14 However, M. terrae complex, as well as other mycobacterial pathogens, is frequently unidentified even with Ziehl-Neelsen preparation, and only indirect findings of mycobacterial infection (granulomatous inflammation with or without caseation, giant cells, lymphocytic infiltration, and focal fibrinoid necrosis) are found, which may serve as the initial suspicion of closed-space atypical mycobacterial infection. 10,12,14 However, M. terrae complex, as well as other mycobacterial pathogens, is frequently unidentified even with Ziehl-Neelsen preparation, and only indirect findings of mycobacterial infection (granulomatous inflammation with or without caseation, giant cells, lymphocytic infiltration, and focal fibrinoid necrosis) are found, which may serve as the initial suspicion of closed-space atypical mycobacterial infection.…”