What is the difference between in situ and invasive cervical carcinoma? How is the Pap smear used in the diagnosis of carcinoma? How do contraceptive pills and IUDs exert their contraceptive effects?...

What is the difference between in situ and invasive cervical carcinoma? How is the Pap smear used in the diagnosis of carcinoma?

How do contraceptive pills and IUDs exert their contraceptive effects? What medical problems may be associated with their use?