Subject : In the field of clinical psychology and, more particularly, in the field of psychosomatic, this thesis aims is to investigate potential and complex linkages, nonlinear, between a defective family communication, a psychic construction in false self and the occurrence of breast cancer in adulthood. Method : Data were collected from 50 patients with breast cancer. Three semistructured interviews and a Rorschach test complemented by the risk psychosomatic assessment grid simplified of Pr Stora we have used tools.Results : The risk psychosomatic grid helped identify three groups : mild, moderate, severe. We not that if the interview results are eloquent than severe for the group, data from the Rorschach test, in turn, reveal the whole of our population specificity. This specificity is characterized by fragility of the body envelope with problems relating to the physical integrity and impact on the sense of identity and also by socialization difficult or limited. All our subjects presented a personality psychic structure in false self