Evaluation of the Impact of the Use of Hypnotherapy Performed by a Virtual Reality Toolalong the Care Pathway of Patients Undergoing Breast Cancer Treatment.

"hypnotherapy arm, patients will receive in addition to the care provided by the usual :~* for PAC insertion: a 45-minute hypnotherapy session 2 hours before the procedure in a room of the outpatient surgery unit (UCA).~* during the entire duration of chemotherapy (and/or immunotherapy for HER2+ patients) : one hypnotherapy session before the first treatment and then every 3 weeks. One hypnotherapy session before the first treatment and then every 3 weeks. Thus, sessions will take place before each treatment for 3-week inter-course regimens and every 3 treatments for chemotherapy administered on a weekly. Each session will last 20 minutes."