Eosinophilic cystitis in adults

Purpose: We describe the largest clinical experience with the diagnosis and management of largely anecdotally reported eosinophilic cystitis. Materials and Methods: Five women and 12 men 18 to 84 years with proved eos inophilic cystitis were treated in a 23-year period. Some combination of he maturia, irritative voiding, dysuria and suprapubic pain was present in 14 cases (82%). The remaining 3 patients (18%) were asymptomatic and the diagn osis was made by cystoscopy done because of a history of bladder carcinoma. Available data included no peripheral eosinophilia in 10 of 10 patients st udied, pyuria in 12 (92%), microhematuria in 11 of 13 (84%), sterile urine in all 17, abnormal urine cytology in 2 of 17 (12%), bilateral hydronephros is in 1 and a bladder mass or thickening in 2. Cystoscopy showed erythema i n all cases and tumor-like lesions or edema in 3 (17.6%). Histological stud ies revealed eosinophilic cystitis in all 17 patients, while in 1 with no h istory of bladder carcinoma eosinophilic cystitis coexisted with carcinoma. Results: Two patients were lost to followup and the remaining 15 were follo wed 1 to 37 months. After biopsy and fulguration of the lesions 10 patients received no further treatment, including 6 with complete symptom resolutio n and 1 with improvement. The 3 asymptomatic patients with a history of bla dder carcinoma remained asymptomatic and disease-free. Another 4 patients u nderwent medical therapy and improved, of whom 1 had recurrence that was su ccessfully re-treated medically. The remaining patient, who was symptomatic , underwent cystoprostatectomy for end stage bladder disease. Conclusions: Manifestations of eosinophilic cystitis indistinguishably mimi c those of other inflammatory and malignant bladder disorders that may prec ede or coexist with it. The condition usually follows a benign course in mo st cases but occasionally its relentless progression causes crippling disea se.