I had Mohs surgery just under 2 months ago for a basal cell carcinoma on my cheek. The doctor took off one layer, and, before stitching me up, dug a bit deeper to excise the root of the cancer (they found no cancer cells on the edges of the skin layer; only the root cells at the base). Over the past week, a tiny bump has emerged on the incision line in the approximate spot where the original skin cancer was. Is this just scar tissue forming, or could this be a recurrence of the cancer? T