[Plaut-Vincent's acute necrotizing ulcerative fusospirillum tonsillitis associated to infectious mononucleosis].

We report the case of a 14 years old girl patient with recurrent tonsillitis who had been diagnosed and admitted previously with Plaut-Vincent's angina. Six weeks after leaving the hospital she was assited in Emergencies by an infectious mononucleosis associated to unilateral tonsillar necrotizing ulceration from which a sample was taken to microbiological exam finding the fusospirochaetal complex Borrelia vincenti and Fusobacterium necrophorum. A literature review at the respect of such association and its treatment is performed.