Here's a journal article on kidney fibrosis: www.nature.com/ki/journal/v69/n2/full/5000054a.html. Much of it is written in medical-ese that I don't pretend to understand, but maybe one of you can make better sense of it. In general, fibrosis refers to scar tissue in or on the kidneys. It physically distorts their structure, and that prevents them from working properly. It usually occurs in response to a chronic long-term problem. Dialysis is the standard response to fibrosis--it doesn't alter the scar tissue, but it does cleanse the blood. There are a lot of articles on PubMed and other scientific databases about "renal fibrosis," but I couldn't find much general info except on websites that might not be trustworthy. Hopefully, the docs will be talking with Kris very soon.     Janet