Sen. Ted Kennedy Has Brain Cancer

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After the treatment, what sort of recovery is likely or possible? Would he be able to step back into his job?

That would depend totally on his energy, how he's feeling overall from the treatment, and if he has any neurologic deficits from the tumor itself; how intact his speech is and his language function.

Anything else you would want to add?

The hope that he'll be out of the hospital soon and be able to feel well  during the treatment and remain active and have good time with his family and continue to be active in his political career.