Les masses rétropéritonéales chez l’enfant : à propos d’une tumeur de Wilms et d’un neuroblastome

Detection of a retroperitoneal mass in children needs a fast and accurate exploration. We present the case- reports of 2 children under the age of 5 years admitted to the University Hospital of Liège, one with a Wilms tumor and one
with a neuroblastoma.