[Alkaline encrusted cystitis secondary to Proteus mirabilis infection in a HIV infected patient].

We described for the first time an alkaline encrusting cystitis in a patient with the acquired immune deficiency. This is an entity characterized by severe dysuria and long standing urinary frequency, alkaline urine and radiographically visible calcification of the urinary bladder. It has been observed in patients with permanent Foley catheter, persistent infections due to microorganisms with urolytic activity, urinary bilharziosis or tuberculosis, or malignant bladder tumors. None of these entities were described and the patient had all conditions for this syndrome.