[Detection of buccal cavity cancers with toluidine blue (author's transl)]

When malignant tumours of the oral cavity are of a small size, they are asymptomatic during a long time, and it is difficult to detect them. A method permitting to discover them more easily during the examination would be a precious rescue. In this aim, we have tested the oral coloration with toluidine-blue in 50 patients with a high risk of malignant tumour. This coloration has allowed to reveal cancer in 3 patients whereas no tumour was found at previous clinical examination.