Sen. Arlen Specter (R-Pa.) announced today that he has been diagnosed with a recurrence of Hodgkin's disease, posting a statement to his Senate website. Specter was originally diagnosed with Hodgkin's disease, a cancer of the lymph system, in 2005.

In March Specter released a book about his fight with cancer, "Never Give In: Battling Cancer in the Senate," which he coauthored with Frank J. Scaturro for St. Martin's Press.

After his 2005 diagnosis, Specter underwent six months of chemotherapy and achieved full remission. Specter will now begin 12 weeks of chemotherapy to treat the cancer's recurrence. Specter also had successful surgery for a brain tumor in 1993; the tumor returned in 1996 and was treated successfully.

"I was surprised by the PET [Positron Emission Tomography] scan findings because I have been feeling so good. I consider this just another bump on the road to a successful recovery from Hodgkin