Inclusion Criteria:  ≥18 year-old patients With histologically confirmed thoracic cancer (breast, esophagus or lung) Recommendation of thoracic radiotherapy (RT) with curative intent With or without chemotherapy All patients must be able to read and understand Spanish All patients must sign informed consent form.  Exclusion Criteria:  Patients with no medical records, Pregnant Previously diagnosed with severe left ventricular dysfunction or a cardiac insufficiency Patients with metastatic disease and indication of palliative RT Patients with significant comorbidities associated to a <5 year life expectancy. Patients previously treated with thoracic RT