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Difference between revisions of "Non-malignant skin disease"
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Non-malignant skin disease (view source)
Revision as of 15:05, 6 September 2012
, 15:05, 6 September 2012→Seborrheic keratosis: more
(→Seborrheic keratosis: +ddX) |
(→Seborrheic keratosis: more) |
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| Line 179: | Line 179: | ||
Epidemiology: | Epidemiology: | ||
*Old people. | *Old people. | ||
* | *Usually in sun exposed area.<ref name=emed_sk1>URL: [http://emedicine.medscape.com/article/1059477-overview http://emedicine.medscape.com/article/1059477-overview]. Accessed on: 26 August 2011.</ref> | ||
===Gross=== | ===Gross=== | ||
| Line 192: | Line 192: | ||
*Border sharply demarcated. | *Border sharply demarcated. | ||
*Hyperkeratosis - stratum corneum extra thick. | *Hyperkeratosis - stratum corneum extra thick. | ||
*Horn cysts - intraepidermal collections of keratin. | *Horn cysts - intraepidermal collections of keratin - '''key feature'''. | ||
*Clusters of cells with brown granular material in the superficial dermis/dermoepidermal junction - pigmented melanocytes. | *Clusters of cells with brown granular material in the superficial dermis/dermoepidermal junction - pigmented melanocytes. | ||
| Line 199: | Line 199: | ||
*[[Verruca vulgaris]] - SK may have papillomatous projections. | *[[Verruca vulgaris]] - SK may have papillomatous projections. | ||
*[[Basal cell carcinoma]], fibroepitheliomatous pattern - esp. reticulated SK. | *[[Basal cell carcinoma]], fibroepitheliomatous pattern - esp. reticulated SK. | ||
*[[Melanocytic nevus]]. | |||
Images: | Images: | ||