On the 18th, a new book on brain cancers will be published. Brain Tumors-Leaving the Garden of Eden: Survival Guide to Diagnosis, Learning the Basics, Getting Organized & Finding Your Medical Team, written by Paul Zeltzer, MD, has some very good information on Primary Central Nervous System lymphoma.
Dr. Zeltzer has allowed me to post an excerpt of the book on CNS lymphoma on this site. The book is quite reasonable given it was written by a doctor ;^)