How long does it take for white spots to become cancerous?

Vocal leukoplakia is a chronic lesion of the throat, a benign lesion, but under the stimulation of certain factors, it is also prone to the possibility of cancer. Therefore, when showing vocal leukoplakia, it is generally a manifestation of precancerous lesions. However, the development of vocal leukoplakia is relatively slow, and it may take decades for cancer to develop, so there is a longer time for patients to be treated.