Korean Journal of Radiology

The Korean Society of Radiology (대한영상의학회)
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Chest Radiographic Findings in Primary Pulmonary Tuberculosis: Observations from High School Outbreaks

  • Koh, Won-Jung (Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Jeong, Yeon-Joo (Department of Radiology, Pusan National University Hospital, Pusan National University School of Medicine and Medical Research Institute) ;
  • Kwon, O-Jung (Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Kim, Hee-Jin (Korean Institute of Tuberculosis) ;
  • Cho, En-Hi (Korea Centers for Disease Control and Prevention) ;
  • Lew, Woo-Jin (Korean Institute of Tuberculosis) ;
  • Lee, Kyung-Soo (Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine)
  • Received : 2010.06.25
  • Accepted : 2010.07.01
  • Published : 2010.12.01
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Abstract

Objective: To describe the radiographic findings of primary pulmonary tuberculosis (TB) in previously healthy adolescent patients. Materials and Methods: The Institutional Review Board approved this retrospective study, with a waiver of informed consent from the patients. TB outbreaks occurred in 15 senior high schools and chest radiographs from 58 students with identical strains of TB were analyzed by restriction fragment length polymorphism analysis by two independent observers. Lesions of nodule(s), consolidation, or cavitation in the upper lung zones were classified as typical TB. Mediastinal lymph node enlargement; lesions of nodule(s), consolidation, or cavitation in lower lung zones; or pleural effusion were classified as atypical TB. Inter-observer agreement for the presence of each radiographic finding was examined by kappa statistics. Results: Of 58 patients, three (5%) had normal chest radiographs. Cavitary lesions were present in 25 (45%) of 55 students. Lesions with upper lung zone predominance were observed in 27 (49%) patients, whereas lower lung zone predominance was noted in 18 (33%) patients. The remaining 10 (18%) patients had lesions in both upper and lower lung zones. Pleural effusion was not observed in any patient, nor was the mediastinal lymph node enlargement. Hilar lymph node enlargement was seen in only one (2%) patient. Overall, 37 (67%) students had the typical form of TB, whereas 18 (33%) had TB lesions of the atypical form. Conclusion: The most common radiographic findings in primary pulmonary TB by recent infection in previously healthy adolescents are upper lung lesions, which were thought to be radiographic findings of reactivation pulmonary TB by remote infection.

Keywords

References

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