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(→Lichen simplex chronicus: more) |
(insect bite, LSC images) |
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*Spongiosis (epidermal intercellular edema -- cells appear to have a clear halo around 'em). | *Spongiosis (epidermal intercellular edema -- cells appear to have a clear halo around 'em). | ||
*Parakeratosis = retention of nuclei in the stratum corneum. | *Parakeratosis = retention of nuclei in the stratum corneum. | ||
Images: | |||
*[http://commons.wikimedia.org/w/index.php?title=File:Lichen_simplex_chronicus_-_low_mag.jpg LSC - low mag. (WC)]. | |||
*[http://commons.wikimedia.org/w/index.php?title=File:Lichen_simplex_chronicus_-_high_mag.jpg LSC - high mag. (WC)]. | |||
==Seborrheic keratosis== | ==Seborrheic keratosis== | ||
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*Dermatofibroma pertuberans (DFSP). | *Dermatofibroma pertuberans (DFSP). | ||
*Melanoma. | *Melanoma. | ||
==Superficial dermal infiltrates== | |||
Discussed in detail by Alsaad and Ghazarian.<ref name=pmid16311340>{{Cite journal | last1 = Alsaad | first1 = KO. | last2 = Ghazarian | first2 = D. | title = My approach to superficial inflammatory dermatoses. | journal = J Clin Pathol | volume = 58 | issue = 12 | pages = 1233-41 | month = Dec | year = 2005 | doi = 10.1136/jcp.2005.027151 | PMID = 16311340 }}</ref> | |||
===Dermal perivascular lymphoeosinophilic infiltration (DPLI)=== | |||
*Microscopic appearance is just what it is called: | |||
**Lymphocytes and eosinophils around the vessels in the superficial dermis. | |||
DDx:<ref name=pmid16311340/> | |||
*Insect bite. | |||
*Drug reactions. | |||
*Urticarial reactions. | |||
*Prevesicular early stage of [[bullous pemphigoid]]. | |||
*HIV related dermatoses. | |||
Images: | |||
*[http://en.wikipedia.org/wiki/File:Dermal_perivascular_lymphoeosinophilic_infiltrate_-_very_low_mag.jpg DPLI - very low mag. (WC)]. | |||
*[http://en.wikipedia.org/wiki/File:Dermal_perivascular_lymphoeosinophilic_infiltrate_-_very_high_mag.jpg DPLI - very high mag. (WC)]. | |||
==Bullous disease== | ==Bullous disease== |
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