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Lula, 77, had small white patches called "leukoplakia" removed from his larynx last month, after beating President Jair Bolsonaro in an Oct.

Doctors at Sao Paulo's Sirio Libanes Hospital, where the 77-year-old Lula was treated for throat cancer 11 years ago, said the procedure had removed small white patches called 'leukoplakia' from his vocal cords.

Leukoplakia, also called 'smokers keratosis', can be caused by repeated injury and irritation or exposure to smoking and alcohol.

An exam of my tongue revealed a small white spot or “leukoplakia” on the side of my tongue that I had neither seen nor felt.

He discovered leukoplakia, a typically benign condition characterized by white patches, in Weller’s larynx.