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Background: Diagnosis of extrapulmonary tuberculosis including tuberculous lymphadenitis (TBLN) is challenging because of its atypical clinical presentation, paucibacillary nature of mycobacteria at the infected sites, variation in sensitivity of a test to specimens collected by different methods and from different infected tissues.

Methods: In the present study, suspected individuals for lymph node tuberculosis irrespective of age were enrolled prospectively and specimens were collected aseptically by fine needle aspiration (FNA). After the implementation of exclusion criteria, FNA specimens from a total of 278 cases of suspected TBLN were evaluated for cytomorphology (FNAC), presence of acid-fast bacillus (AFB) in smear microscopy and specific detection of mycobacterial DNA in cartridge-based nucleic acid amplification test (CBNAAT).

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