What causes cervical congestion?

If women do gynecological examination, see cervical congestion is obvious. This situation should be considered, is not caused by the following factors: first, vaginitis leucorrhea secretion stimulation, also can cause cervical congestion. Second, is what we call cervical erosion. Is due to physiological columnar epithelium ectopic to the cervical mouth, causing to see cervical like congestion erosion performance. The third is cervical intraepithelial neoplasia, which can also cause obvious bleeding in the cervix. Finally, it is conventional to see cervical cancer. Due to the infinite proliferation of cancer cells, it will cause obvious congestion and erosion in the cervix, like cauliflower. Therefore, to diagnose the cause of cervical bleeding, only need to do a TCT when doing internal examination.