Worried

Today my father is having surgery. It is due to begin in 20 minutes. He's having a part of his large intestine removed because it is precancerous. Hopefully it has not yet turned into cancer. My dad is one of the healthiest people I know. Eats right, is trim, and can outlast most 20 year olds on the bike. I know he's going to be fine and recover quickly, but I am still obviously concerned. Hopefully he'll be discharged from the hospital in time to spend New Year's at home.