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*[[Squamous cell carcinoma of the skin]]. | *[[Squamous cell carcinoma of the skin]]. | ||
*[[Lentigo maligna]] (melanoma in situ on sun damaged skin) - esp. for ''pigmented AK''.<ref name=Ref_Derm353>{{Ref Derm|353}}</ref> | *[[Lentigo maligna]] (melanoma in situ on sun damaged skin) - esp. for ''pigmented AK''.<ref name=Ref_Derm353>{{Ref Derm|353}}</ref> | ||
**One should | **One should see benign melanocytes within an AK... otherwise one should do stains as the melanocytes may be mimicking keratinocytes. | ||
*[[Seborrheic keratosis]] - should not have basilar nuclear atypia. | *[[Seborrheic keratosis]] - should not have basilar nuclear atypia. | ||
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