ovarian borderline tumor
(oh-VAYR-ee-un BOR-der-line TOO-mer)
A condition in which abnormal cells that may become cancer form in the tissue that covers the ovary (one of a pair of female reproductive glands in which eggs are made). Ovarian borderline tumors rarely spread outside of the ovary. Also called ovarian borderline malignant tumor and ovarian low malignant potential tumor.