%0 Journal Article %T Desaf¨ªos quir¨²rgicos de las anomal¨ªas del desarrollo sexual %A Gorduza %A Daniela %A Vidal %A Isabelle %A Birraux %A Jacques %A Gay %A Claire-Lise %A Dem¨¦de %A Delphine %A Mure %A Pierre-Yves %A Mouriquand %A Pierre %J Archivos Espa£¿oles de Urolog¨ªa (Ed. impresa) %D 2010 %I Scientific Electronic Library Online %R 10.4321/S0004-06142010000700003 %X disorders of sex development (dsd) remain a fascinating challenge for the paediatricians, endocrinologists, biologists, psychiatrists, geneticists, radiologists, surgeons and for the whole society. this article aims at highlighting the current controversies and questions met with genital reconstruction in children born with abnormal genitalia. the main current techniques of masculinization and feminization are reviewed with their progress and their problems. the tools of decision used to assign a gender in some newborns with complex dsd are discussed showing that at the dawn of the third millenium, one still does not know why a boy is a boy, and a girl is a girl. %K disorders of sex development %K hypospadias %K mixed gonadal dysgenesis %K congenital adrenal hyperplasia %K feminization %K masculinization. %U http://scielo.isciii.es/scielo.php?script=sci_abstract&pid=S0004-06142010000700003&lng=en&nrm=iso&tlng=en