Husband dx malignant melanoma , Clark s level II; Breslows thickness 0.5mm, non-ulcerated, non-mitogenic, atypical melanocytic proliferation. Shave biopsy , as the derm did not think it was much concern. Radial growth phase is present. Vertical not present, small specimen. Appears to have partial dermal regression. How serious is this, recommended return for re-excision with appropriate surgical margins.