"The huge benefit far outweighs the small patient numbers" whose tumors spread more diffusely on Avastin, says Duke University neuro-oncologist Henry S Friedman.

FORBES: Magazine Article

Dr. ANDREW NORDEN (Neuro-oncologist): In general, there are a number of different types of malignant gliomas, and we don't yet know which type he has.

NPR: Kennedy's Illness Casts Pall over Congress

Here's how neuro-oncologist Andrew Norden described it last night to NPR.

NPR: Kennedy's Illness Casts Pall over Congress