Internal Medicine
Online ISSN : 1349-7235
Print ISSN : 0918-2918
ISSN-L : 0918-2918
Pediatric Pulmonary Tuberculoma with a Solid Pulmonary Nodule Detected on Chest Computed Tomography
Atsuhito UshikiYoshitaka YamazakiGen IdeuraTakashi ShinboMariko SugawaraMineyuki HamaMasayuki Hanaoka
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2014 Volume 53 Issue 8 Pages 913-916


A 14-year-old girl underwent a medical checkup for Mycobacterium tuberculosis infection because her grandmother had been diagnosed with pulmonary tuberculosis three months earlier. The interferon-gamma release assay (IGRA) showed a positive result. The patient's chest X-ray findings were normal. Chest computed tomography (CT) showed a single mass lesion in the right lower lobe of the lung. A sputum smear of acid-fast bacilli was positive; however, the polymerase chain reaction results for tuberculosis were negative. We diagnosed the patient with pulmonary tuberculosis based on the fact that she had come in contact with a tuberculosis patient. Six weeks later, a liquid culture examination for acid-fast bacilli was found to be positive and the acid-fast bacillus was identified as M. tuberculosis. The use of chest CT is not routinely recommended in all children suspected of having M. tuberculosis infection. However, IGRA-positive children who report frequent contact with infected individuals should undergo CT tomography if chest X-rays do not show any abnormal shadows.

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© 2014 by The Japanese Society of Internal Medicine
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