The button-like cervix is at the end of the vagina. The strait leads to the uterus. Abnormal cervical cell proliferation sometimes called Precancerous changes, or abnormal cells. A Pap smear is the growth of abnormal cells in the lining of the cervix. It can be mild, moderate, or severe. Most cases are mild. and get better without treatment Untreated, severe abnormal cell growth can lead to cervical cancer.