I have malignant melanoma in radial stage with minimal microscopic invasion. could this have spread already, i am waiting for wide excision .

Wait for all results: You have to be more specific , spread depends not how big but how deep into skin the lesion extended , did it penetrated beyond basal layer of skin , wait for wide excision report , then evaluation of sentinal nodes or immediate nodes next to lesion.Then you can predict , speak to your doctor for explanation and stage. Good luck.

Information: Radial grownth phase is probably better than vertical. Melanomas less that 1mm thick have excellent prognosis. The pronosis depends primarily on thickness. Other factors include ulceration, lymphocytic response, regression, tumors in the 1-4mm range benefit from sentinal node biopsy.