Study of the Life Stories of Patients Making a Request for Euthanasia, in the Context of Advanced Cancer.

"After inclusion in the study, patients will be met for a free interview. The interview will be conducted using an open-ended interview method with the patients to allow free expression of their life history, using open and broad questions to avoid the influence of the interviewer as much as possible.~Each interview will be conducted by the same person to allow for better interpersonal reproducibility.~After the interview, the patients will be seen again to complete two questionnaires:~* An attachment questionnaire: Relationship Scales Questionnaire~* A questionnaire on symptoms: Distress thermometer"