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Difference between revisions of "Non-malignant skin disease"
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+dermatofibroma
m (→Lichen planus: rm ',') |
m (+dermatofibroma) |
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Image: | Image: | ||
*[http://commons.wikimedia.org/wiki/File:Skin_keratoacanthoma_whole_slide.jpg Keratocanthoma (WC).] | *[http://commons.wikimedia.org/wiki/File:Skin_keratoacanthoma_whole_slide.jpg Keratocanthoma (WC).] | ||
==Dermatofibroma== | |||
===General=== | |||
*AKA fibrous histiocytoma. | |||
*Reactive process -- it is ''not'' a neoplasm. | |||
*Usually assoc. with previous trauma. | |||
**In women... usually legs. | |||
===Microscopic=== | |||
Features:<ref>WMSP P.492.</ref> | |||
*Prominent fibrous bundles, especially at the edge of the lesion. | |||
**Surrounded by spindle cells (fibroblasts). | |||
***Usually thought of as fibroblasts surrounded by fibrous material ("collagen-trapping"). | |||
*Lack of adnexal structures, i.e. no sweat glands, no hair. | |||
Images: | |||
*[http://missinglink.ucsf.edu/lm/DermatologyGlossary/dermatofibroma.html Dermatofibroma (ucsf.edu)]. | |||
DDx: | |||
*Neurofibroma. | |||
*Blue nevus. | |||
*Dermatofibroma pertuberans (DFSP). | |||
*Melanoma. | |||
==Bullous disease== | ==Bullous disease== | ||