stage I cervical cancer (... SER-vih-kul KAN-ser) Cancer is
found in the cervix only. Stage I is divided into stages IA and
IB, based on the amount of cancer that is found. In stage IA, a
very small amount of cancer that can only be seen with a
microscope is found in the tissues of the cervix. Stage IA is
divided into stages IA1 and IA2, based on the size of the tumor.
In stage IA1, the cancer is not more than 3 millimeters deep and
not more than 7 millimeters wide. In stage IA2, the cancer is
more than 3 but not more than 5 millimeters deep, and not more
than 7 millimeters wide. Stage IB is divided into stages IB1 and
IB2. In stage IB1, (1) the cancer can only be seen with a
microscope and is more than 5 millimeters deep and more than 7
millimeters wide; or (2) the cancer can be seen without a
microscope and is 4 centimeters or smaller. In stage IB2, the
cancer can be seen without a microscope and is larger than 4
centimeters.