President Bush's doctors pronounced him "fit for duty" Wednesday after his annual physical, the White House said.

The president usually gets his annual physical in August, visiting National Naval Medical Center in suburban Maryland. Apparently this year, the doctors' review took place at the White House and was unannounced beforehand. Presidential press secretary Tony Snow said the full results would be released later Wednesday.

"It's actually been conducted in a series of exams over the last couple weeks," Snow said. "Doctors have determined that the president remains in superior fitness for a man his age — anybody who's seen him on the bike or out and about certainly knows that — and that he is fit for duty."

As part of his physical, Bush had a colonoscopy last month over a weekend at his Camp David, Md., mountaintop retreat. Five small growths were removed from his colon but doctors determined that none of them was cancerous.