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Published on: September 5, 2017

Clinical practice: diagnosis of childhood tuberculosis

L Rigouts1

  • 1Mycobacteriology Unit, Institute of Tropical Medicine, Nationalestraat 155, 2000 Antwerp, Belgium. lrigouts@itg.be

European Journal of Pediatrics
|April 28, 2009
PubMed

Insights

Diagnosing childhood tuberculosis (TB) is challenging, but key signs include persistent cough, fever, and weight loss. This review covers clinical, radiological, and bacteriological methods for accurate TB diagnosis in children.

Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Radiology

Background:

  • Childhood tuberculosis (TB) poses a significant global health burden.
  • Accurate diagnosis of TB in children presents unique challenges compared to adults.

Purpose of the Study:

  • To review and summarize diagnostic approaches for TB infection and disease in pediatric populations.
  • To highlight the importance of integrating clinical, radiological, and bacteriological findings.

Main Methods:

  • Review of clinical signs and symptoms associated with pulmonary and extra-pulmonary TB in children.
  • Evaluation of the role of chest radiography and advanced imaging techniques.
  • Assessment of tuberculin skin testing (Mantoux test) and its limitations.
  • Consideration of epidemiological factors, such as index case identification.
  • Discussion of bacteriological confirmation methods and their utility.

Main Results:

  • Key clinical indicators for pulmonary TB include persistent cough (>2 weeks), fever, and failure to thrive.
  • Extra-pulmonary TB occurs in over 40% of cases and may present with specific symptoms.
  • Chest X-rays are valuable; advanced imaging is reserved for inconclusive cases.
  • The Mantoux test shows variable reactivity, often reduced in HIV-co-infected or malnourished children.
  • Identifying an adult TB case is crucial for diagnosis in low-endemic areas.
  • Bacteriological confirmation is challenging but essential for definitive diagnosis and drug resistance assessment.

Conclusions:

  • A comprehensive diagnostic strategy integrating clinical evaluation, imaging, and bacteriology is vital for childhood TB.
  • Early recognition of clinical signs and epidemiological links aids timely diagnosis.
  • Bacteriological confirmation remains a critical step, especially in complex or suspected drug-resistant cases.

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