Actinic keratosis: Difference between revisions
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*Yellow-brown scaly, patches. | *Yellow-brown scaly, patches. | ||
*Sandpaper sensation - on touching. | *Sandpaper sensation - on touching. | ||
*Usually small (<1cm), but larger lesions may occur. | |||
*May be pigmented.<ref>URL: [http://www.dermoscopy-ids.org/index.php/newest-case/79-lentigo-maligna-vs-pigmented-actinic-keratosis http://www.dermoscopy-ids.org/index.php/newest-case/79-lentigo-maligna-vs-pigmented-actinic-keratosis]. Accessed on: 23 August 2012.</ref> | *May be pigmented.<ref>URL: [http://www.dermoscopy-ids.org/index.php/newest-case/79-lentigo-maligna-vs-pigmented-actinic-keratosis http://www.dermoscopy-ids.org/index.php/newest-case/79-lentigo-maligna-vs-pigmented-actinic-keratosis]. Accessed on: 23 August 2012.</ref> | ||
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*[[Seborrheic keratosis]] - should not have basilar nuclear atypia. | *[[Seborrheic keratosis]] - should not have basilar nuclear atypia. | ||
*[[Lichenoid keratosis]] (esp. for ''lichenoid actinic keratosis'') - has a band of inflammatory cells in the superficial dermis. | *[[Lichenoid keratosis]] (esp. for ''lichenoid actinic keratosis'') - has a band of inflammatory cells in the superficial dermis. | ||
*Discoid Luphus Erythematosus. | |||
===Images=== | ===Images=== | ||
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Image:SkinTumors-P5280065.JPG | Actinic keratosis. (WC) | Image:SkinTumors-P5280065.JPG | Actinic keratosis. (WC) | ||
Image:SkinTumors-P5280055.JPG | Actinic keartosis. (WC) | Image:SkinTumors-P5280055.JPG | Actinic keartosis. (WC) | ||
Image:SkinTumors-P5280056.JPG | Actinic keratosis. (WC) | |||
</gallery> | |||
<gallery> | |||
Image:Bowenoid_actinic_keratosis_-_high_mag.jpg | Bowenoid actinic keratosis - high mag. (WC) | Image:Bowenoid_actinic_keratosis_-_high_mag.jpg | Bowenoid actinic keratosis - high mag. (WC) | ||
Image:Bowenoid_actinic_keratosis_-_very_high_mag.jpg | Bowenoid actinic keratosis - very high mag. (WC) | Image:Bowenoid_actinic_keratosis_-_very_high_mag.jpg | Bowenoid actinic keratosis - very high mag. (WC) | ||
</gallery> | </gallery> | ||
===Histologic subtypes of actinic keratosis=== | ===Histologic subtypes of actinic keratosis=== | ||
Like most common things, there are several variants:<ref name=Ref_Derm353>{{Ref Derm|353}}</ref> | Like most common things, there are several variants:<ref name=Ref_Derm353>{{Ref Derm|353}}</ref> | ||
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*Lichenoid actinic keratosis - band of inflammatory cells at the dermal-epidermal junction. | *Lichenoid actinic keratosis - band of inflammatory cells at the dermal-epidermal junction. | ||
**DDx: [[lichen planus]]. | **DDx: [[lichen planus]]. | ||
*Atrophic actinic keratosis. | |||
==Sign out== | ==Sign out== | ||
<pre> | |||
Left Ear Skin Lesion, Biopsy: | |||
- Hypertrophic squamous lesion, possibly hypertrophic actinic keratosis, see comment. | |||
- Solar elastosis, marked. | |||
Comment: | |||
The lesion has mild basal atypia, proliferative activity and marked hyperkeratosis. The lesion extends to the edge of the tissue and may not be representative of the lesion seen clinically. Clinical correlation is required. Re-excision to rule-out un-sampled pathology should be considered. | |||
</pre> | |||
===All uppercase=== | |||
<pre> | <pre> | ||
SKIN LESION, RIGHT THIGH, BIOPSY: | SKIN LESION, RIGHT THIGH, BIOPSY: | ||