Though I'm sorry for the reasons you're here, rondeej.
As of the neuropathy denizens here, I'm a little suspicious, given all that your husband has gone through, that they've diagnosed him with CIDP, inasmuch as neuropathy is a known adjunct to blood cancers, usually through cross-reactivity of monoclonal antibodies (M-proteins) that are often produced, not to mention the possiblity of toxic neuropathy from cancer treatments (did he receive any of immunosuppresive chemotherapies?). And--cancer cells themselves sometimes produce substances that cross-react with nerve, or result in antibody production that attacks nerve (it's rather complicated, but needs to be tested for).
You should come on over and post about all this--very specifically--at the neuropathy board here:
http://neurotalk.psychcentral.com/forum20.html
And, take a look through:
http://neuromuscular.wustl.edu/antibody/mprotein.htm
http://neuromuscular.wustl.edu/nother/paraneo.htm