[Idiopathic retroperitoneal fibrosis in children. Apropos of a case, review of the literature].

A case of idiopathic retroperitoneal fibrosis (IRF) in an 14 year old boy is presented. The diagnosis was mislead by the pelvic localization. One year after the biopsy and without any treatment, the scanner control shows the regression of the fibrotic plaque. The authors review the literature of this condition. They recall the principal clinic features of IRF in the children. A discussion of current diagnostic procedures and treatment is presented.