Nested polymerase chain reaction for detection of Mycobacterium tuberculosis in solitary pulmonary nodules

Jae Jeong Shim, Hee Jin Cheong, Eun Young Kang, Kwang Ho In, Se Hwa Yoo, Kyung Ho Kang

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Background: Differential diagnosis of solitary pulmonary nodules (SPNs) can be difficult in areas, such as Korea, where tuberculosis is endemic. Nested polymerase chain reaction (PCR) is a widely used method to test a very small amount of pathogen and to detect Mycobacterium tuberculosis from fine needle aspirates. Objectives: The usefulness of nested PCR for the detection of M tuberculosis from tuberculous SPN and for the differential diagnosis of SPN was evaluated. Methods: Thirty-three patients in whom a diagnosis of SPN was made based on a CT scan of the chest were enrolled in this study. Included were 17 malignant and 16 benign SPNs. Nested PCR was carried out for the detection of M tuberculosis by using TB-1, TB-2, TB-28, and TB-29C on fine needle aspirates from the nodule in all 33 cases. Results: Aspirates from malignant neoplasms, pneumonia, and sequestration were all negative on nested PCR for tuberculosis. One of the three radiologically suspected tuberculous nodules without response to anti-tuberculosis drugs (uncertain) yielded positive results on nested PCR for the detection of M tuberculosis. In contrast, 7 out of 8 (87.5%) aspirates from proven tuberculous nodules showed positive results on nested PCR. Nested PCR could be used to detect M tuberculosis in fine needle aspirates from tuberculous SPNs with good sensitivity (87.5%) and specificity (96.0%). Conclusion: Nested PCR for the detection of M tuberculosis in fine needle aspirates may be useful in the differential diagnosis of SPNs.

Original languageEnglish
Pages (from-to)20-24
Number of pages5
JournalChest
Volume113
Issue number1
DOIs
Publication statusPublished - 1998

Keywords

  • Polymerase chain reaction
  • Solitary pulmonary nodule
  • Tuberculosis

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Critical Care and Intensive Care Medicine
  • Cardiology and Cardiovascular Medicine

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