Thankfully, all three have recovered and are healthy and doing well.
That's what will make Tuesday night's tilt against the Minnesota Wild that much more meaningful. The Bruins will host their Hockey Fights Cancer Night, presented by Lahey Health, in an effort to raise awareness for such a terrible disease.
"When you hear the word cancer, your heart immediately drops," said Hayes, who has four siblings, including New York Rangers forward Kevin Hayes. "It's always great to be there and support people going through it. It's obviously a tough fight to fight the chemo and the radiation. You can see how draining it is.
"It's tough to see your parents just fighting and being tired. But I know my Mom was still coming home from radiation and cooking dinner, bringing me to practice, and acting like nothing was going to effect the daily routine of the family.
"It's always nice to be able to go see a younger kid, as well, and put a smile on their face, knowing their fighting and KO'ing cancer."