[Camillo Benso Ballabio (1912 - 1984)].

The author commemorates, in the 20th year since his death, Camillo Benso Ballabio, unforgettable figure of rheumatologist, renowned clinician, man of great culture. The most important stages of his life are described, by adding to the biographical sketches some quotations that confirm the intellectual depth of such a protagonist of the history of the Italian rheumatology.