[Eosinophilic cystitis as symptom of an idiopathic hypereosinophilic syndrome].

INTRODUCTION: Eosinophilic cystitis as a symptom of an idiopathic hypereosinophilic syndrome is a very rare clinical picture with an unpredictable course. A combination of both symptoms has not been described previously in the peer reviewed literature. As a result of this myeloproliferative disease there is a pathologically increased production of eosinophils in the blood which, in turn, can cause organ complications. Cardiovascular, thromboembolic and pulmonary disease have been reported as complications in the oncological literature.

CASE REPORT: A girl aged 2 years and 4 months developed a massive intraluminal tumour of the bladder as a result of eosinophilic cystitis.

CONCLUSIONS: Because of the rareness of this disease standardized therapy regimens do not exist; however, individualized treatment and close. Oncological follow-ups are highly recommended. The Aim should be to reduce the excessive production of eosinophil in order to avoid organ manifestations. Even so, the course of the disease remains unpredictable.