b'SECTION 1: WHAT IS LYMPHEDEMA (LE)?But what if one day something goes wrong, and the green train breaks down? Suddenly, some of those passengers from the morning are unable to get home, and they get stranded. At first, the stranded passengers are calm as they wait for the next train to come and take them home. Initially, when the lymphatics are damaged, thereis a backup of cells and proteins or lymph. At first,this backup may not cause any symptoms butmay be detected using sophisticated devices.14 UNDERSTANDING LYMPHEDEMA: KEEPING THE TRAIN ON TRACK SECTION 1: WHAT IS LYMPHEDEMA (LE)? 15'