Mayo is state of the art. But a number of other places are also state of the art. For multiple reasons, it's pretty meaningless to say that any one of them stands out for all purposes. First of all, "cancer" isn't one disease. It's a collection of hundreds of distinct diseases characterized by uncontrolled cellular growth with the potential to spread. "Blood cancer" itself - the subject of this group - consists of different diseases. Lots of institutions conduct clinical trials on diagnosis and treatment of various cancers, all of which can result in "papers that other doctors read and study". Lots of places have physicians just as able as those at Mayo. Large teaching institutions have the advantage of internal cross-pollination - the ability of one physician to easily consult with others in the same or related fields (I love the phrase "tumor board"). That's an obvious plus.

So does it make sense for someone with the diseases discussed here to seek out a large teaching institution with group(s) that specialize in blood cancers? Sure. Mayo in particular? Yes, if you live near Rochester, Jacksonville or Phoenix - or if you live somewhere that doesn't have convenient access of one of those large teaching institutions with group(s) that specialize in blood cancers - Mayo should surely be in the differential of institutions. Otherwise, there are advantages - medical as well as non-medical - to being treated close to home.