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Confused by path report: In Situ and Invasive Mel in same lesion?
NOTE: Sox-10 highlights an asymmetric compound melanocytic proliferation comprised of single and nested melanocytes in disarray along the dermal-epidermal junction and similar melanocytes in the superficial dermis. PRAME shows strong, uniform positivity throughout the lesional melanocytes, There are a few smaller melanocytes scattered in the dermis lacking PRAME reactivity which are interpreted as an associated melanocytic nevus, These finding support the diagnosis.
Margins, peripheral and deep: melanoma in situ present at peripheral biopsy margin; deep biopsy margin narrowly free of melanoma.
So, this lesion was both invasive and in situ? Or, is there additional in situ that goes outside the edges of the biopsy?
I appreciate any insights you all might have in interpreting this.
Mine said something similar. I think it’s labeled invasive if there’s any part that goes past the epidermis. The in situ portion is at the edges.
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