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J Urol. 2001 Mar;165(3):805-7.

Eosinophilic cystitis in adults.

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  • 1Department of Urology, Mayo Clinic, Rochester, Minnesota 55905, USA.



We describe the largest clinical experience with the diagnosis and management of largely anecdotally reported eosinophilic cystitis.


Five women and 12 men 18 to 84 years with proved eosinophilic cystitis were treated in a 23-year period. Some combination of hematuria, irritative voiding, dysuria and suprapubic pain was present in 14 cases (82%). The remaining 3 patients (18%) were asymptomatic and the diagnosis was made by cystoscopy done because of a history of bladder carcinoma. Available data included no peripheral eosinophilia in 10 of 10 patients studied, pyuria in 12 (92%), microhematuria in 11 of 13 (84%), sterile urine in all 17, abnormal urine cytology in 2 of 17 (12%), bilateral hydronephrosis in 1 and a bladder mass or thickening in 2. Cystoscopy showed erythema in all cases and tumor-like lesions or edema in 3 (17.6%). Histological studies revealed eosinophilic cystitis in all 17 patients, while in 1 with no history of bladder carcinoma eosinophilic cystitis coexisted with carcinoma.


Two patients were lost to followup and the remaining 15 were followed 1 to 37 months. After biopsy and fulguration of the lesions 10 patients received no further treatment, including 6 with complete symptom resolution and 1 with improvement. The 3 asymptomatic patients with a history of bladder carcinoma remained asymptomatic and disease-free. Another 4 patients underwent medical therapy and improved, of whom 1 had recurrence that was successfully re-treated medically. The remaining patient, who was symptomatic, underwent cystoprostatectomy for end stage bladder disease.


Manifestations of eosinophilic cystitis indistinguishably mimic those of other inflammatory and malignant bladder disorders that may precede or coexist with it. The condition usually follows a benign course in most cases but occasionally its relentless progression causes crippling disease.

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