To plan the best ovarian cancer treatment, your doctor needs to know the grade of the tumor and the extent (stage) of the disease. The stage is based on whether the tumor has invaded nearby tissues, whether the cancer has spread, and if so, to what parts of the body.
Usually, surgery is needed before staging of ovarian can be complete. The surgeon takes many samples of tissue from the pelvis and abdomen to look for cancer.
Your doctor may order tests to find out whether ovarian cancer has spread: