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Difference between revisions of "Seborrheic keratosis"
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→Microscopic
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DDx:<ref name=Ref_Derm338-9>{{Ref Derm|338-9}}</ref> | DDx:<ref name=Ref_Derm338-9>{{Ref Derm|338-9}}</ref> | ||
*[[Actinic keratosis]] - especially, irritated SKs; have nuclear atypia and parakeratosis. | *[[Actinic keratosis]] - especially, irritated SKs; have nuclear atypia and parakeratosis. | ||
*[[Verruca vulgaris]] - | *[[Verruca vulgaris]] - koilocytes, compact hyperkeratosis and parakeratosis. | ||
**SKs typically have prominent basketweave hyperkeratosis. | |||
**SKs may have papillomatous projections. | |||
*[[Basal cell carcinoma]], fibroepitheliomatous pattern - esp. reticulated SK. | *[[Basal cell carcinoma]], fibroepitheliomatous pattern - esp. reticulated SK. | ||
*[[Melanocytic nevus]]. | *[[Melanocytic nevus]]. | ||