A 37-year-old male patient presented with long-standing ulcerations on his tongue. His physical appearance was pale, and the patient had been recently diagnosed with HIV. He had not yet begun his retroviral medications. Laboratory tests revealed a high viral load and reduced lymphocyte count. He had white, thick, and adherent corrugated plaques that were hyperkeratotic.

No underlying edema or erythema was observed. The test for oral Candidiasis was negative. What can be the most probable diagnosis for this patient? (Answer is posted in the comment section below!) *This Case Challenge is from the Editorial Team of Docplexus and is meant for educational purposes only.