VIA procedure Ė Examination after application of 5% acetic acid Ė Abnormal features Ė Rapidity of onset of acetowhitening
In metaplasia, inflammation, or low-grade precancer, the acetowhite area appears slowly over 20Ė30 seconds and fades away quickly. While applying acetic acid to the cervix, VIA providers should look for the real-time changes on the transformation zone.
In contrast, in high-grade precancer or cancer, the acetowhite changes take place very rapidly and persist for a longer period of time.
Invasive cervical cancers turn acetowhite almost immediately.