I confess that I have never heard of post transplant lymphomas. I guess they are caused by the ? Is this common? Anyway, I am glad you found us, and most people I know who are on NxStage feel like the extra work is worth it. Maybe he could get his neph to let him do 8hrs nocturnal (while he sleeps) so that he gets good dialysis but will still have his days free. Good luck to you both, and let us know how we can help.