Regardless of randomization, the patient will be invited to three follow-up visits, respectively 3 and 6 months after inclusion/surgery. At each of the outpatient visits the participant will be asked to complete the DoloTest ® , VAS pain score and the Patient Scar Assessment Scale. The clinician will complete the Observer Scar Assessment Scale and record the consumption of pain medication. DoloTest ® is a validated, visual analogue questionnaire designed to assess the patients experienced pain and impact on the patients daily life. Three 3-mm punch biopsies will be taken at inclusion, one from the mastectomy scar, one from the skin 2 cm above the mastectomy scar in the medioclavicular line, and one from the healthy skin on the health breast in an area corresponding to the other skin biopsy.