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Difference between revisions of "Lymph node pathology"
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==Dermatopathic lymphadenopathy== | ==Dermatopathic lymphadenopathy== | ||
===General=== | ===General=== | ||
*Lymphadenopathy associated with a skin lesion. | *Lymphadenopathy associated with a skin lesion - '''key feature'''. | ||
*May be benign | *May be benign or malignant (e.g. T-cell lymphoma). | ||
===Microscopic=== | ===Microscopic=== | ||
* | Features:<ref name=ILNP226>{{Ref ILNP|226}}</ref> | ||
*Abundant histiocytes & "special" cells - '''key feature''': | |||
**Histiocytes +/- melanin pigment '''key feature''' if present. | |||
**Interdigitating dendritic cells. | |||
**Langerhans cells. | |||
*+/-Plasma cells. | |||
*+/-Eosinophils. | |||
IHC: | |||
*Interdigitating dendritic cells: S100 +ve, CD1a -ve. | |||
*Langerhans cells: S100 +ve, CD1a +ve. | |||
==See also== | ==See also== | ||