title: Keratonodular tonsillitis.
abstract: Reported is an unusual lesion on the right palatine tonsil in a man with latent primary syphilis. The lesion was white, nodular, firm, and asymptomatic, and histologically had a keratinized surface; it was not caused by primary syphilis or any other known or described entity. The term keratonodular tonsillitis has been coined to designate this lesion of unknown cause or significance.
mesh_terms: D000328:Adult; D006801:Humans; D007642:Keratosis / Q000473:pathology; D008297:Male; D014069:Tonsillitis / Q000473:pathology*