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Difference between revisions of "Melanocytic lesions"
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Melanocytic lesions (view source)
Revision as of 19:50, 15 September 2012
, 19:50, 15 September 2012→Recurrent melanocytic nevus: +sclerosing nevus
(→Neurocristic hamartoma: +desmoplastic) |
(→Recurrent melanocytic nevus: +sclerosing nevus) |
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| Line 185: | Line 185: | ||
*HMB-45 deep component -ve. | *HMB-45 deep component -ve. | ||
*Ki-67 - non-proliferative. | *Ki-67 - non-proliferative. | ||
==Sclerosing melanocytic nevus== | |||
*[[AKA]] ''sclerosing nevus''. | |||
===General=== | |||
*Similar to ''[[recurrent nevus]]''. | |||
*Clinically may be confused with [[melanoma]]. | |||
*No history of trauma or prior excision. | |||
===Microscopic=== | |||
Features:<ref name=pmid18537860 >{{Cite journal | last1 = Fabrizi | first1 = G. | last2 = Pennacchia | first2 = I. | last3 = Pagliarello | first3 = C. | last4 = Massi | first4 = G. | title = Sclerosing nevus with pseudomelanomatous features. | journal = J Cutan Pathol | volume = 35 | issue = 11 | pages = 995-1002 | month = Nov | year = 2008 | doi = 10.1111/j.1600-0560.2007.00941.x | PMID = 18537860 }}</ref> | |||
*Trizonal: | |||
*# Junctional or compound nevus. | |||
*# Fibrotic tissue with irregular melanocytic nests. | |||
*# Nevus below scar. | |||
DDx: | |||
*[[Malignant melanoma]]. | |||
*[[Recurrent melanocytic nevus]] - also trizonal; however, has a fibrotic layer that does ''not'' have melanocytes in it. | |||
==Pigmented spindle cell nevus== | ==Pigmented spindle cell nevus== | ||