American Urological Association - Encrusted Cystitis
- Chronic urinary tract infection characterized by calcium salt deposits in bladder mucosa.
- Results from inorganic salt deposition in mucosa due to urine alkalinization by urea-splitting bacteria (most commonly Corynebacterium urealyticum).
- More common in females.
- Cystoscopy may show gritty encrusted mucosa (image A).
- Fibrinous exudates admixed with calcified necrotic debris and mixed inflammatory cellular infiltrates (image B).
- Treated with antibiotics and acidification of urine.