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Difference between revisions of "Lichenoid keratosis"
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'''Lichenoid keratosis''' is a [[non-malignant skin disease|benign skin condition]]. | |||
It is also known as '''lichen planus-like keratosis'''. | |||
==General== | |||
*Caucasians - middle age or older. | |||
*May be a variant of [[seborrheic keratosis]] (with marked inflammation).<ref name=Ref_Derm346>{{Ref Derm|346}}</ref> | |||
Clinical DDx:<ref name=Ref_Derm346>{{Ref Derm|346}}</ref> | |||
*[[Basal cell carcinoma]], [[squamous cell carcinoma of the skin]], melanocytic neoplasm. | |||
==Microscopic== | |||
Features:<ref name=Ref_Derm347>{{Ref Derm|347}}</ref> | |||
*Hyperkeratosis. | |||
*Parakeratosis. | |||
*Band of inflammatory cells at DE junction (lichenoid inflammation). | |||
*Dead keratinocytes (Civatte bodies). | |||
*Dermal melanophages. | |||
DDx: | |||
*[[Lichen planus]] - need clinical correlation (mucosal lesions). | |||
*[[Drug reaction]]. | |||
*[[Cutaneous T-cell lymphoma]]. | |||
*Regressed melanocytic lesion, esp. [[malignant melanoma]]. | |||
*Lichenoid [[actinic keratosis]] - has atypical hyperchromatic basal cells - esp. at edge of lesion, usu. in the context of [[solar elastosis]]. | |||
Images: | |||
*[http://www.dermpathexpert.com/id57.html Lichenoid keratosis (dermpathexpert.com)]. | |||
==Sign out== | |||
<pre> | |||
SKIN LESION, MID-MIDDLE BACK, PUNCH BIOPSY: | |||
- LICHENOID KERATOSIS. | |||
</pre> | |||
===Incompletely excised=== | |||
<pre> | |||
SKIN LESION, LEFT CHEST, PUNCH BIOPSY: | |||
- LICHENOID KERATOSIS VERSUS ACTINIC KERATOSIS. | |||
- NEGATIVE FOR BASAL CELL CARCINOMA. | |||
- SEE COMMENT. | |||
COMMENT: | |||
No eosinophils are apparent. No melanocytic lesion is identified; however, excision of the | |||
whole lesion to exclude a partially regressed melanocytic lesion is suggested. | |||
</pre> | |||
==See also== | |||
*[[Non-malignant skin disease]]. | |||
==References== | |||
{{Reflist|2}} | |||
[[Category:Non-malignant skin disease]] | |||
[[Category:Diagnosis]] | [[Category:Diagnosis]] | ||