Eosinophilic cystitis.

4 cases of eosinophilic granulomatous cystitis are reported. The clinical presentation of this rare entity is disucssed. It is suggested that the lesion is probably akin to eosinophilic enteritis or eosinophilic granuloma of the gastrointestinal tract and represents a local intense allergic reaction of eosinophilic type. The causative agents are yet to be identified. Management by an allergist is suggested as a first line of treatment as it appears that the bladder lesions are usually too extensive for local resection.