Former longtime Pennsylvania Senator Arlen Specter was battling for his life Monday after recently being diagnosed with a "serious form of cancer," a source close to his office told CNN.
Specter, who has overcome numerous serious illnesses over the past two decades - including a brain tumor and non-Hodgkins lymphoma - was diagnosed six weeks ago with the new form of cancer, the specifics of which are being closely held by his family.
Specter had "a big flare up" of the disease Monday night, the source said.
