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Difference between revisions of "Melanocytic lesions"
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Melanocytic lesions (view source)
Revision as of 17:23, 14 September 2013
, 17:23, 14 September 2013→Blue nevus
(→IHC: tweak) |
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DDx: | DDx: | ||
*[[Malignant melanoma]] - mitotic figures, necrosis, cytologic atypia, asymmetry (architecure, pigment). | |||
*Atypical blue nevus - have some of the features of melanoma. | |||
*[[Clear cell sarcoma]]. | |||
*[[Dermatofibroma]] - esp. amelanotic BN. | *[[Dermatofibroma]] - esp. amelanotic BN. | ||
*[[Combined melanocytic nevus]] - blue nevus found together with another nevus (classically [[common melanocytic nevus]]), superficial. | *[[Combined melanocytic nevus]] - blue nevus found together with another nevus (classically [[common melanocytic nevus]]), superficial. | ||
*[[Pigmented epithelioid melanocytoma]] - superificial dermis, has nuclear atypia. | *[[Pigmented epithelioid melanocytoma]] - superificial dermis, has nuclear atypia. | ||
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*HMB-45 diffusely +ve.{{fact}} | *HMB-45 diffusely +ve.{{fact}} | ||
**Melanoma patchy +ve. | **Melanoma patchy +ve. | ||
*MART-1 diffusely +ve. | |||
*Ki-67 low. | *Ki-67 low. | ||