Abstract
Diagnosing EPTB is difficult as various clinical presentations are seen with paucibacillary nature of the disease. Maurya AK et al. (J Postgrad Med 58(3):185–189) AFB smear hasn't been much effective in diagnosing of EPTB. Tuberculosis of head and neck diagnosis can be missed due to large number of smear negative cases, leading false negative cases increase. CBNAAT is cartridge-based nucleic acid amplification test which detects the presence of TB bacilli this study we have examined the effectiveness of CBNAAT for diagnosing EPTB with cervical lymphadenitis and compared with Sputum AFB Microscopy smear. Aims and objective 1.To study the role of cartridge-based nucleic acid amplification test (CBNAAT) in early diagnosis of extra pulmonary tuberculosis. 2 Comparative analysis of CBNAAT with AFB smears in EPTB. Type of Study Descriptive retrospective observational study was done at the department of ENT and Head & surgery, A.B.V. Govt medic al college, Vidisha, M.P, India. Result Out of 184 patients 43 samples were AFB smear positive and 141 were negative. In CBNAAT 88 out of 184 and 96 were found to be negative.32 patients were negative on Sputum microscopy AFB analysis but found to be positive on CBNAAT. Sensitivity of CBNAAT was 86% AFB 64%, Specificity of CBNAAT, AFB is 91% and 89% respectively. Our study finds that CBNAAT is much more effective in diagnosis of EPTB with cervical lymphadenitis when compared to AFB smear microscopy alone.
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