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Extrapulmonary tuberculosis.

S K Sharma1, A Mohan

  • 1Department of Medicine, All India Institute of Medical Sciences, D II/23, Ansari Nagar, New Delhi 110-029, India. sksharma@aiims.ac.in

The Indian Journal of Medical Research
|November 3, 2004
PubMed
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See all related articles

Extrapulmonary tuberculosis (EPTB) is a significant concern, especially in HIV/AIDS patients, often presenting atypically and leading to diagnostic delays. Advanced imaging and tissue biopsy aid diagnosis and management of this widespread TB form.

Area of Science:

  • Infectious Diseases
  • Public Health
  • Clinical Medicine

Background:

  • Extrapulmonary tuberculosis (EPTB) presents challenges due to atypical manifestations and diagnostic difficulties.
  • The human immunodeficiency virus (HIV) and acquired immunodeficiency syndrome (AIDS) pandemic has altered tuberculosis epidemiology, increasing EPTB prevalence.
  • EPTB accounts for 15-20% of tuberculosis cases in immunocompetent individuals and over 50% in HIV-positive individuals.

Purpose of the Study:

  • To highlight the changing epidemiology and diagnostic challenges of extrapulmonary tuberculosis.
  • To discuss the role of advanced imaging and tissue biopsy in diagnosing EPTB.
  • To emphasize the need for further research into optimal treatment regimens for EPTB, particularly in conjunction with highly active antiretroviral treatment (HAART).

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Main Methods:

  • Review of current understanding of EPTB epidemiology and clinical presentation.
  • Discussion of diagnostic modalities including conventional methods, advanced imaging (CT, MRI), laparoscopy, and endoscopy.
  • Emphasis on the importance of tissue sampling via biopsy or surgery for diagnosis and complication management.

Main Results:

  • Lymph node involvement is most common, followed by pleural effusion, but virtually any body site can be affected.
  • Atypical presentations and difficulties in obtaining tissue samples often lead to delayed diagnosis of EPTB.
  • Advanced imaging techniques significantly improve anatomical localization of EPTB.
  • Standard antituberculosis drug treatment is generally effective, but biopsy/surgery may be needed.

Conclusions:

  • EPTB diagnosis is often delayed due to atypical presentations and challenges in sample procurement.
  • Imaging and biopsy are crucial for diagnosis, localization, and management of EPTB.
  • Further research is essential to optimize treatment strategies, duration, and safety, especially when combined with HAART for co-infected patients.