Make sure your technician is free to clip hair widely. . Ensure that the entire shaved area is scrubbed aseptically. . Spend some time planning your excision before draping the patient. . Have a Plan A and a Plan B (at least) to close the surgical site. . Pretend the tumor is grossly infected to remain aware of protecting healthy tissue. . Avoid entering the tumor itself by accident, with instruments or fingers. . Excise the biopsy tract when applicable. . Respect all other rules of surgery: Use aseptic technique, preserve blood supply, minimize dead space and reduce tension during closure. . Change gloves, instruments and drapes before closing the surgical site. . "Cancer should not be peeled out, shelled out, enucleated or curetted if a cure is expected.” This is a quote from Stephen Withrow in his oncology book.