In situ in congenital nevus
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In situ in congenital nevus

› Forums › General Melanoma Community › In situ in congenital nevus

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    • February 23, 2016 at 4:49 am
    Marie with 4 boys
    Participant
      Today, I received a call from my dermatologist with my biopsy results – malignant melanoma in situ. Pathology report reads as follows: MALIGNANT MELANOMA IN SITU. SEE NOTE.

      NOTE: Mart-1 immunohistochemistry highlights confluent growth and pagetoid spread of melanocytes, supporting the above interpretation. The lesion extends to the margin.

      I am to see a surgeon to have the rest removed and the margins. I’m wondering if anyone else has had a melanoma in a large congenital nevus, and how it works… My freckle/mole area extends from my elbow to my shoulder and covers about half of my arm in circumference. The melanoma is in a solid brown area (within the larger area) about the size of a half dollar. I guess I’ll have more answers when I .see the surgeon, but I’m just trying to process this whole thing. Thanks.

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        • February 23, 2016 at 8:12 am
        stars
        Participant

          I'm sorry to hear that it's melanoma, but it's great news – really great news – that it's in situ with basically no metastatic potential. I'm really not sure what kind of excision is required, I hope someone else can help with that, typically it would be 0.5mm margin all around the melanoma. Your melanoma is not yet fully removed because (as per path report) it extends to the margins. So at present, you have no 'clean' margin – to my mind you need a clean margin plus 0.5mm. But again, thank goodness it's in situ.

          • February 23, 2016 at 8:12 am
          stars
          Participant

            I'm sorry to hear that it's melanoma, but it's great news – really great news – that it's in situ with basically no metastatic potential. I'm really not sure what kind of excision is required, I hope someone else can help with that, typically it would be 0.5mm margin all around the melanoma. Your melanoma is not yet fully removed because (as per path report) it extends to the margins. So at present, you have no 'clean' margin – to my mind you need a clean margin plus 0.5mm. But again, thank goodness it's in situ.

            • February 23, 2016 at 8:12 am
            stars
            Participant

              I'm sorry to hear that it's melanoma, but it's great news – really great news – that it's in situ with basically no metastatic potential. I'm really not sure what kind of excision is required, I hope someone else can help with that, typically it would be 0.5mm margin all around the melanoma. Your melanoma is not yet fully removed because (as per path report) it extends to the margins. So at present, you have no 'clean' margin – to my mind you need a clean margin plus 0.5mm. But again, thank goodness it's in situ.

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