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Difference between revisions of "Melanocytic lesions"
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===Sign out=== | ===Sign out=== | ||
====Compound==== | |||
<pre> | <pre> | ||
SKIN, | SKIN, CENTRAL BACK, EXCISION: | ||
- DYSPLASTIC MELANOCYTIC NEVUS WITH MILD NUCLEAR ATYPIA. | |||
- NEAREST MARGIN (LATERAL MARGIN) 6 MM. | |||
</pre> | </pre> | ||
====Micro==== | |||
=====Micro===== | |||
The sections show hair-bearing skin with a compound melanocytic lesion. The epidermal component extends at least three rete ridges further than the dermal component (shoulder phenomenon). There is bridging between the sides of the rete ridges and lamellar fibrosis. The melanocyte nuclei are approximately the size of the keratinocyte nuclei, and do not have a prominent nucleolus (mild nuclear atypia). | The sections show hair-bearing skin with a compound melanocytic lesion. The epidermal component extends at least three rete ridges further than the dermal component (shoulder phenomenon). There is bridging between the sides of the rete ridges and lamellar fibrosis. The melanocyte nuclei are approximately the size of the keratinocyte nuclei, and do not have a prominent nucleolus (mild nuclear atypia). | ||
There is no upward scatter of melanocytes and melanocytes in the dermis are mature. No mitotic activity is appreciated. | There is no upward scatter of melanocytes and melanocytes in the dermis are mature. No mitotic activity is appreciated. | ||
====Junctional==== | |||
<pre> | |||
SKIN, LOWER BACK, EXCISION: | |||
- DYSPLASTIC JUNCTIONAL MELANOCYTIC NEVUS WITH MILD NUCLEAR ATYPIA. | |||
- NEAREST MARGIN (LATERAL MARGIN) 1 MM. | |||
</pre> | |||
=====Micro===== | |||
The sections show hair-bearing skin with a junctional melanocytic lesion. There is bridging between the sides of the rete ridges and lamellar fibrosis. The melanocyte nuclei are approximately the size of the keratinocyte nuclei, and do not have a prominent | |||
nucleolus (mild nuclear atypia). | |||
There is no upward scatter of melanocytes. No mitotic activity is appreciated. | |||
==Neurocristic hamartoma== | ==Neurocristic hamartoma== | ||