RETROPERITONEAL FIBROSIS WITH FAVORABLE EVOLUTION UNDER TREATMENT WITH TAMOXIFEN.

Retroperitoneal fibrosis (RPF), a disease with a severe outcome due to the complications it causes, can be associated with the processes of atherosclerosis with a massive and extensive fibrosis. In this paper we present a patient with retroperitoneal fibrosis in which we noticed estrogen receptors at the level of the periaortic fibrous tissue and we obtained a regression of this process under treatment with tamoxifen. [ABSTRACT FROM AUTHOR]