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Difference between revisions of "Seborrheic keratosis"
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==Gross== | ==Gross== | ||
[[Image:Seborrheic keratosis on human back.jpg|thumb|right|Clinical image showing a large number of SKs (Leser–Trélat sign). (WC/Heilman)]] | |||
*"Stuck-on" appearance - raised lesion. | *"Stuck-on" appearance - raised lesion. | ||
==Microscopic== | ==Microscopic== | ||
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*[[Acanthosis nigricans]] - site important. | *[[Acanthosis nigricans]] - site important. | ||
*[[Fibroepithelial polyp]], epithelial type - may have abundant compact keratin, lack horn cysts. | *[[Fibroepithelial polyp]], epithelial type - may have abundant compact keratin, lack horn cysts. | ||
*[[Eccrine poroma]] - lack horn cysts. | |||
===Images=== | ===Images=== | ||
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<pre> | <pre> | ||
Skin Lesion (Submitted "Seborrheic Keratosis"), Right Back, Excision: | Skin Lesion (Submitted "Seborrheic Keratosis"), Right Back, Excision: | ||
- Extensively fragmented bland squamous epithelium with horn cysts | - Extensively fragmented bland superficial squamous epithelium with | ||
horn cysts and keratineous material, compatible with impression of | |||
seborrheic keratosis; deeper lesion cannot be excluded. | seborrheic keratosis; deeper lesion cannot be excluded. | ||
</pre> | </pre> | ||