Eosinophilic cystitis

We describe four cases of eosinophilic cystitis in whom no specific cause c ould be found, and review the literature. Complaints at presentation includ ed urgency, frequency, abdominal pain, and haematuria. In three patients th e symptoms and ultrasound pictures suggested a bladder tumour. One patient was treated with anticholinergics and corticosteroids without relief of sym ptoms; a localised eosinophilic tumour was excised in one patient who remai ned symptom free; and two patients were managed conservatively with spontan eous resolution of bladder pathology and symptoms. One case was identified by random bladder biopsy in 150 consecutive patients with unexplained irrit able micturition complaints. Eosinophilic cystitis is rare in children. Aft er biopsy, we consider a wait and see policy is justified as symptoms tend to disappear spontaneously. Routine bladder biopsies in children with unexp lained bladder symptoms is not justifiable.