[Urethral duplication in boys. Apropos of 2 cases].

The duplication of the urethra is a rare but well described anomaly. The authors report two more cases which contribute to illustrate the classification and the problems met in this condition. The classification proposed by D.I. Williams and M.M. Kenawi has been adopted. They distinguish 5 types of urethral duplications: epispadiac, hypospadiac (complete or incomplete forms), spindle urethra, bifid urethras (H-type) with an accessory pre-anal branch, and finally collateral duplications. The first reported case is a complete epispadial duplication type. The second case is a incomplete hypospadial duplication type, associated with late complications due to the unrecognized valve effect by the mucosal folds at the junction between the two urethras. The diagnosis, the treatment and the embryology are discussed in both cases.