The authors report a psychological equiry carried out by interviews and tests on mastectomised patients to find out the psycho-effective and behavioural implications related to this type of mutilation, to the type of preoperative information and to the relation with the doctor in charge, also to an eventual morphological reconstruction of the breast. They also analyse the relation between the objective result evaluated by the surgeon and the subjective evaluation of the patient. Some results of breast reconstruction are presented.