Lois has been notified that she must undergo surgery to remove a malignant growth from her uterus. She asks her doctor whether she will need adjuvant chemotherapy after her surgery. Her doctor tells h

Lois has been notified that she must undergo surgery to remove a malignant growth from her uterus. She asks her doctor whether she will need adjuvant chemotherapy after her surgery. Her doctor tells her she will know that only after the surgery. What sorts of information might her doctor obtain from the surgery to determine whether she needs additional treatment?