[Precancerous diseases in the area of the mouth and at the vermilion border of the lip].
D006801:Humans; D008048:Lip Neoplasms / Q000145:classification*; D009062:Mouth Neoplasms / Q000145:classification*; D011230:Precancerous Conditions / Q000145:classification*
Predrakovye zabolevaniia v polosti rta i na krasnoĭ kaĭme gub.