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Difference between revisions of "Non-malignant skin disease"
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→Dermatofibroma: more
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==Dermatofibroma== | ==Dermatofibroma== | ||
===General=== | ===General=== | ||
*AKA fibrous histiocytoma. | *AKA ''fibrous histiocytoma''. | ||
*Reactive process -- it is ''not'' a neoplasm. | *Reactive process -- it is ''not'' a neoplasm. | ||
*Usually assoc. with previous trauma. | *Usually assoc. with previous trauma. | ||
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***Usually thought of as fibroblasts surrounded by fibrous material ("collagen-trapping"). | ***Usually thought of as fibroblasts surrounded by fibrous material ("collagen-trapping"). | ||
*Lack of adnexal structures, i.e. no sweat glands, no hair. | *Lack of adnexal structures, i.e. no sweat glands, no hair. | ||
*+/-Acanthosis (thickened epithelial layer - specifically thickened ''stratum spinosum'') with basal keratinocyte hyperpigmentation. | |||
**May vaguely resemble ''basal cell carcinoma''. | |||
Images: | Images: | ||