Cytophotometric determination of DNA in minimal invasive cancer of the human cervix uteri.

The early invasive cancer of the human cervix uteri is marked by a higher proliferation rate in its DNA histograms, which is a sign of perforation of the basal membrane. When this process finishes and an invasive carcinoma is present, the range of the DNA values decreases. The carcinoma has possibly reached a silent phase that will end with the penetration into the lymphatic system.