In Regard to de Groot et al.

We read the article by de Groot et al1 with great interest because it addressed an important issue by examining the relationship between radiation dose and myocardial fibrosis in patients undergoing neoadjuvant chemoradiation (CRT) for esophageal cancer. The extracellular volume (ECV) increase was linear with the radiation dose per left ventricle segment, indicating radiation-induced myocardial fibrosis. We believe that the results of the study...