Cancers most commonly develop on the tongue, floor of mouth, and lower lip vermilion. Cancer-prone areas are indicated by yellow dots
Smith RA, Cokkinides V, von Eschenbach AC, Levin B, Cohen C, Runowicz CD, et al. American Cancer Society guidelines for the early detection of cancer. Ca: a Cancer Journal for Clinicians. 2002;52(1):8-22.
www.cdc.gov/OralHealth/oral_cancer/index.htm Accessed 9/23/18