The best possible treatment option is surgical removal of a cancer that has not spread. To prevent recurrence, a
surrounding margin of normal tissue should also be removed. An initial approach
that removes the tumor with an adequate margin of normal tissue may be the most
important factor in controlling cancer. When a cancer recurs locally because of
incomplete excision, the opportunity for cure is often lost. That’s why
surgeons speak of “clean margins,” meaning no cancer cells are found on...