Is this skin cancer? (Photo)

I had a very large excision of a junctional nevus with ‘dysplastic’ features. The scar is substantial. One year later, I see a new growth on top of the scar. A flat elongated mole. How sereous? The epidermis is irregular with elongated rete ridges, hyperpigmentation, and diffuse melanocytic hyperplasia confined to the basal cell layer with no dermal component. There is bridging of nests between adjacent epidermal retia and lamellar and/or concentric fibroplasia around them. This was the bi resul