Final answer:
Cervical pre-cancer refers to abnormal cell growth in the cervix that has not yet invaded nearby tissues or spread to other parts of the body. The proportion of large cervical pre-cancers that invade depends on various factors, and some cases can progress to invasive cervical cancer if left untreated.
Step-by-step explanation:
Cervical pre-cancer refers to abnormal cell growth in the cervix that has not yet invaded nearby tissues or spread to other parts of the body. The proportion of large cervical pre-cancers that invade can vary depending on various factors such as the individual's immune response and the presence of risk factors like Human Papillomavirus (HPV) infection. If left untreated, some cases of pre-cancer can progress to invasive cervical cancer.