Eosinophilic cystitis in children: a self-limited process.

We report a case of eosinophilic cystitis in a 7-year-old boy. Bilateral hydronephrosis and a lesion involving most of the bladder were seen initially. Complete resolution of all symptoms occurred within 3 weeks and the x-ray findings returned to normal in 6 weeks without specific therapy. A review of all reported cases of eosinophilic cystitis in children suggests that, unlike in adults, the disease is self-limited.