So very sorry for your husbands poor health. A year ago Jan my DH had chemo for rectal CA. Couldn't have radiation do to radiation for prostate CA 10-12 years ago and our gastroenterologist (we have know almost 20 years) said no way to surgery (DH was 80 at the time) and so every three months he has a sigmoidoscopy and every 6 a CT to look for CA. He had vocal cord CA in 1998-99 and has had skin CA. removed 4 times. Thank heavens he has a strong heart and is still going strong, but it can wear a person down. You take care of your self, he needs you strong to look after him.