I'm confused. You say the whole thing was melanoma but the path report says in situ? If it has a depth, it is not in situ. Maybe it was in situ at the side margins? Was the depth transsected? Was the deep margin clear or involved? Generally a SNB wouldn't be done on a stage 1a lesion like this. But if the deep margin was involved, that means you don't know how deep the lesion really is. Depth is how staging is determined and if a shave biopsy essentially cuts the lesion in two parts, you will never know the exact depth. (One reason why shave biopsies can be problematic if a lesion is melanoma. It really helps if you post the entire path report, not bits and pieces because we are missing info here.
If the lesion has been bisected, This is one of those gray areas where it might make sense to do the SNB since you don't know the full depth. However, this is your decision. As for your other moles removed, unless they are melanoma, there is no reason to do the SNB. The wide excision is done (with smaller margins) for atypical lesions that aren't melanoma, but have atypical or dysplastic features.
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