Repair of the missing skin tissue is usually done in an operating room. If the defect is small, it may be done under simple local anesthesia. However, if the defect is large, it may require general anesthesia. Two basic techniques are used: Flaps and Grafts. A skin graft is done by removing skin in a normal spot and stitching it to fill in the missing tissue from the skin cancer removal surgery. A flap is done by incising (cutting) and stretching the skin around the defect to fill in the hole.