Evaluation of the Medical Benefit of Spa Therapy on Fibrosis After Radiotherapy for Breast Cancer or UADT (Upper Aerodigestive Tract) Cancer

Inclusion Criteria: * Age ≥ 18 years * In situ or invasive breast cancer or cancer of the upper aerodigestive tract * DLQI ≥ 6 (at least moderate effect on patient's life) * General status WHO 0-1 * Radiotherapy completed at least 6 months ago (with no maximum post radiotherapy delay) * Unilateral breast radiotherapy for breast cancer patients * Skin or soft tissue toxicity (- modules: Skin atrophy, fibrosis of deep connective tissues, fibrosis of superficial soft tissues) CTCAE v4.0 grade ≥ 2 * No inflammatory or infectious flare at inclusion * Female of childbearing potential: negative urine pregnancy test at inclusion * Patient informed and signed consent * Affiliation to a social security systeme or equivalent Exclusion Criteria: * Progressive phase of cancer * Metastatic disease * Patient undergoing specific treatment for breast cancer (except adjuvant hormone therapy and/or adjuvant herceptin) * Bilateral breast/parietal radiotherapy * Breast prosthesis wearer for breast cancer patients * Patient with a tracheostomy for patients with head and neck cancer * Obvious skin ulceration in the site of interest * Contraindication to spa treatment (acute inflammatory disease, active infections, heart failure with NYHA stage \> 1, chronic respiratory failure, labile hypertension, bullous disease) * Chronic progressive dermatological disease * Women who are pregnant or likely to become pregnant within 6 months or who are breastfeeding * Persons deprived of liberty or under guardianship