Juan Fernando Pérez found a small history of Japanese writer Keiko Kasza, for auditors of the series "mothers in Radio Lacan". This story is about the search in which a child is embarked, to find his mother. Juan Fernando Pérez gives worth to what he calls "radical distance of any biological interpretation of the maternal condition" and with a subtle interpretation, demonstrates the Lacanian statement: "We are all adopted". Juan Fernando Pérez is a psychoanalyst in Medellin, AME of the NEL and member of the WAP. He was President of the NEL between 2008 -2010. Child’s voice: Mathilda