A 48-year-old man presents to clinic with a two-week history of “white stuff” on his tongue. He reports that the lesion

A 48-year-old man presents to clinic with a two-week history of “white stuff” on his tongue. He reports that the lesion is not itchy or painful. He is unable to remove it with his toothbrush. He is a smokeless tobacco user (one can per day for twenty years) and has moderate alcohol use. Physical exam reveals a white, sharply demarcated, and slightly elevated lesion on his tongue. No erythematous base is noted. What is the most likely diagnosis for this patient? Chronic candidiasis Lichen planus Oral leukoplakia White sponge nevus