F 30, new flat black mole on my leg, 1.5 mm diameter.can it be an advanced stage melanoma?derm said it is brown with black dots in center,to remove it

Need it removed: There is no way to determine if this is melanoma or something benign without removing it and sending it to pathology for a diagnosis. If the dermatologist said to remove it then I would definitely suggest that you let them take it off and send it to pathology for analysis.

Start with biopsy: Any new skin lesion should be brought to the attention of your friendly dermatologist. The first step in skin cancer diagnosis is performed with a skin biopsy. If the dermatologist recommends a biopsy, I would have it taken off and allow for a pathologist to make the diagnosis.