Diagnostic dilemma in extra-pulmonary tuberculosis: PCR a convenient tool
Journal Title: Journal of Medical and Scientific Research - Year 2018, Vol 6, Issue 4
Abstract
Background: Mycobacterium tuberculosis infection usually manifests as pulmonary tuberculosis and rarely as extra-pulmonary tuberculosis (EPTB). In recent past, there is an increase in the cases of extra-pulmonary tuberculosis. The diagnostic difficulty owing to paucibacillary nature of EPTB poses a challenge in diagnosis and consequently treatment. In this scenario, Polymerase chain reaction (PCR) serves as a convenient tool which gives results within a short time along with other conventional methods in the diagnosis of extra-pulmonary tuberculosis. Aims: To detect Mycobacterium tuberculosis complex (MTBC) by DNA PCR in clinically suspected cases of EPTB. Materials and methods: Clinical samples from suspected cases of EPTB were collected and processed according to the standard guidelines. Smears prepared were subjected to Ziehl-Neelsen (ZN) staining. Nested PCR was performed on extracted DNA from homogenized samples using commercial kit with MTB target gene of IS6110. Results: A total of 156 samples were received for molecular diagnosis of EPTB over a year. They were all subjected to ZN staining and PCR test. All 156 samples were negative for AFB by ZN staining. Out of total 156 samples, 8(5.12%) samples were detected positive by MTB-DNA PCR test. The most common site of EPTB found in this study was pleura (14.28%). Other sites included genito-urinary tract (13.33%), CNS (4.65%) and endometrium (3.44%). Conclusion: Early diagnosis and treatment of EPTB reduces complications and morbidity in affected patients. Though PCR is expensive; in diagnostic dilemma in suspected cases of EPTB, it can be included in diagnostic panel to clinch the diagnosis early and start pre-emptive treatment
Authors and Affiliations
Shukla R, Bilolikar AK, Reddy SG
Keywords
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- EP ID EP596001
- DOI 10.17727/JMSR.2018/6-17
- Views 97
- Downloads 0
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