ENT Oral Cavity 451f513d The most common pre-malignant condition of oral carcinoma is: A Leukoplakia B Erythroplakia C Lichen planus D Submucous Fibrosis High-Yield Explanation (a) Leukoplakia(Ref. Cummings, 6th ed., 1299)All the other choices also are pre-malignant but leukoplakia is the most common premalignant condition.