ROCHESTER, Minn. (AP) — Minnesota Gov. Mark Dayton spent one more day at the Mayo Clinic in Rochester after undergoing surgery for prostate cancer.

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Dayton is expected to return to the governor's residence today (Sunday).

Spokesman Linden Zakula on Saturday said that the governor's surgery was a success and the surgeon found no sign that the cancer had spread beyond the prostate.

Dayton revealed his cancer diagnosis a day after he collapsed during his State of the State address in January. His doctors have said the cancer wasn't related to the collapse, and that it's treatable. The 70-year-old Democratic governor had surgery Thursday.

Dayton is serving his second and last term. He's had several hip and back surgeries during his six years in office.

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