My father had a MI the day of his 2nd chemo tx, went for a cath and put three stents in and fixed the area that caused the MI, But there is another area the left main coranary at the biafircation that is 90% blocked and unfixable (the widow maker). now we have decided no more chemo and a DNR. Does any one have any info on how fast a tumor can grow and the size the tumor would be to impair or make breathing impossible? He is doing good and eating and going home tommorrow. Thanks