[Encrusted cystitis].

Encrusted cystitis is a chronic inflammation of the bladder mucosa associated with calcified deposits induced by numerous bacteria in an alkaline medium. Corynebacterium urealyticum or group D2 is most frequently incriminated. Encrusted cystitis is a rare disease with non-specific clinical features. The diagnosis may be suspected on imaging, but is often only established later on histological findings. Treatment of this disease is based on appropriate antibiotics with acidification of the urine. The authors report a new case of encrusted cystitis in a 78-year-old woman and review the literature on encrusted lesions of the urinary tract.