Extrapulmonary tuberculosis

Extrapulmonary tuberculosis (TB) refers to the haematogenous spread of Mycobacterium tuberculosis.

Pathology

Extrapulmonary tubercuosis can occur as a primary form of the disease, i.e. direct infection of an extrapulmonary organ without the presence of primary pulmonary tuberculosis or it can occur as a result of the spread of primary pulmonary tuberculosis

It appears classically as tuberculous granulomata (tuberculomas) within the affected organs. However, certain forms of the disease exists manifesting with specific findings:

Radiographic features

Widely variable dependent on the site of involvement. It is best to refer to site specific articles.

As tuberculous organ infection can mimic malignant disease recent studies have reported the usefulness of 18FDG PET-CT in evaluating and following up patients in whom the diagnosis is in doubt.


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Article Information

rID: 39930
Section: Pathology
Synonyms or Alternate Spellings:
  • Extrapulmonary TB

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