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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 21:10, 13 September 2012
, 21:10, 13 September 2012→Seborrheic keratosis: finish
(→Seborrheic keratosis: +pseudohorn cyst) |
(→Seborrheic keratosis: finish) |
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*Hyperkeratosis - stratum corneum extra thick. | *Hyperkeratosis - stratum corneum extra thick. | ||
*Horn cysts - intraepidermal collections of keratin - '''key feature'''. | *Horn cysts - intraepidermal collections of keratin - '''key feature'''. | ||
**Actually invaginations | **Actually invaginations - '''not''' true cysts; thus, they may more accurately be called ''pseudohorn cysts''.<ref>URL: [http://www.healthcare.uiowa.edu/dermatology/dpt/HornCyst.htm http://www.healthcare.uiowa.edu/dermatology/dpt/HornCyst.htm]. Accessed on: 13 September 2012.</ref> | ||
*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 234: | Line 234: | ||
====Micro==== | ====Micro==== | ||
The sections show | The sections show skin with acanthosis, pseudohorn cysts, parakeratosis, hyperkeratosis and focal basal epidermal pigmentation. There is no basal nuclear atypia, no mitoses and no melanocytic nests. There is minimal dermal inflammation. There is no solar elastosis. | ||
==Pilomatricoma== | ==Pilomatricoma== | ||