| Tuberculous lymphadenitis | |
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| Classification and external resources | |
Tubercular adenitis with sinus |
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| ICD-10 | A18.2 |
| ICD-9 | 017.2 |
Tuberculous lymphadenitis (or tuberculous adenitis) is a chronic specific granulomatous inflammation with caseation necrosis of the lymph node.
The characteristic morphological element is the tuberculous granuloma (caseating tubercule): giant multinucleated cells (Langhans cells), surrounded by epithelioid cells aggregates, T cell lymphocytes and few fibroblasts. Granulomatous tubercules evolve to central caseous necrosis and tend to become confluent, replacing the lymphoid tissue.
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