Q: Have you ever found cancer on the foot?

A: YES. Any lesion of the skin that does not look or feel right, or that begins to change in size, shape, color, or become painful or bleeds, needs to be examined and possibly biopsied. One patient dropped a can of peppers on her toe. The nail came off, and over a period of months, a blue-black discoloration developed on her skin. I performed a biopsy, and it turned out to be a malignant melanoma. She was referred to a cancer specialist immediately.