Epitheloid cell nodules embedded in shells of lymphocytes. Tubercle bacilli are rarely found in the section Langerhans cells are present . Central caesation may be found in the center of the nodules.
Type of Cutaneous TB |
Features |
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TB verrucosa cutis |
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Scrofuloderma |
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Miliary TB |
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Tuberculid |
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Erythema induratum (Bazin disease) |
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The above differential diagnosis is within Cutaneous TB, but also note the following for overall differential diagnosis |
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Sarcoidosis |
Leprosy |
Discoid lupus erythomatosus |
Basal cell carcinoma |
Deep fungal infection |