[Congenital mesoblastic nephroma: diagnosis and treatment of one case]

The congenital mesoblastic nephroma (CMN) described by Bolande et al. in 1967 is a renal tumor often discovered in neonatal period and early childhood. It's usually considered as a benign tumor with good prognostic for which nephrectomy is the reference treatment. But some cases of local recidives and metastatic sites had been described in the literature. For these reasons histologic analysis and quality of follow up are very important. In this observation we describe a neonatal kind of CMN and we discuss this pathology.