[Eosinophilic cystitis in children].

Eosinophilic cystitis (EC) is a rare disease that frequently suggests a bladder tumour at presentation. It affects both children and adults and its pathophysiology remains unclear. EC usually shows a benign course, but serious complications can occur and relapsing forms have been described. It has rarely been reported in children and therefore, might be poorly known by physicians and underdiagnosed. We report a case that differs from other observations by its unusually rapid resolution, and review the literature on EC's diagnosis, treatment, and course in children.