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Urogenital infection by Mycobacterium bovis relapsing after 50 years.

A 64-year-old man was referred to chest clinic after presenting initially with painless haematuria. Bladder biopsies showed granulomatous inflammation and subsequent urine cultures grew Mycobacterium bovis. He had been treated empirically for genito-urinary tuberculosis twice previously and on both occasions his haematuria ceased. Although the early hospital notes have been destroyed we believe this represents a very late and recurrent relapse of cystitis due to M. bovis.