[Eosinophilic cystitis: review of nine cases].

BACKGROUND: Eosinophilic cystitis is a rare inflammatory pathology. It remains a poorly understood entity. AIM: To report a series of adult cases of eosinophilic cystitis mimicking a bladder tumor. METHODS: Retrospective study of cases of eosinophilic cystitis collected in an urology department. RESULTS: Diagnosis was established on a spontaneous bladder perforation in one case and on hematuria in the eight other cases. Histopatholgy studies confirmed the diagnosis. Eight patients underwent an endoscopic resection of bladder lesions followed by medical therapy with nonsteroidal anti-inflammatory drugs and cortimoxazole. An ileal bladder enlargement was performed in one case. Regular follow-up didn't reveal any recurrence. CONCLUSION: Eosinophilic cystitis is a rare disease simulating a tumor of bladder. Its clinical presentation is not specific and final diagnosis is based on pathology. Endoscopic resection will help to pathologic diagnosis. Associated to corticoids and antihistaminic drug endoscopic resection constitute the treatment of choice.