Eosinophilic cystitis: eight cases report and literature review.

Historically, eosinophilic cystitis is a rare disorder of bladder inflammation with eosinophils infiltration diagnosed by pathologic examination. The etiology is unclear despite the past identification of many factors contributing to this disease. Eight patients with eosinophilic cystitis were reported. The intact history, clinical manifestation, radiological examination and response to therapy were all evaluated. The results showed that 7 patients developed hematuria, 6 patients were with dysuria, 4 patients with frequency and 4 patients with urine retention. Seven patients had abnormal urinalysis but no positive finding in culture. Radiological findings revealed that one patient had bladder mass lesions and upper urinary tract dilation. Cystoscopic examination was performed in every patient and showed mass-like, edematous, ulcerative or hyperemic mucosa lesions. Cold-cup biopsy or transurethral resection of bladder lesions were all performed and could be the first priority to be considered. However, partial or total cystectomy should be taken into consideration when simple treatment failed to resolve this problem. Additionally, antihistamines, steroids or antibiotics are given to control the clinical symptoms. The results of these treatments were good except for one case who suffered from recurrence but recovered after simple operation and oral therapy. Although good results were found concerning treatment, long-term follow-up is necessary.