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Doctors removed five small growths from President Bush 's colon Saturday after he temporarily transferred the powers of his office to Vice President Dick Cheney under the rarely invoked 25th Amendment.
The polyps, extra tissue growing inside the large intestine, were found during a routine colon cancer scan performed at the Camp David presidential retreat.
"All were less than 1 centimeter (about four-tenths of an inch) and none appeared worrisome," White House spokesman Scott Stanzel said. Outside medical experts agreed.
The polyps were sent to the National Naval Medical Center in Bethesda, Md., to be microscopically examined for signs of cancer. Results were expected in 48 to 72 hours. Polyps can turn cancerous, so finding them early is one of the best ways to prevent the disease and improve the odds of surviving it.
"The standard procedure is to remove all polyps that you see," said Dr. David Weinberg, director of gastroenterology at Fox Chase Cancer Center in Philadelphia, who was not part of the medical team at Camp David. "But the majority of polyps taken out that are less than 1 centimeter in size are very unlikely to have cancer in them."
Bush invoked the presidential disability clause of the Constitution at 7:16 a.m. EDT. He transferred his authority to Cheney, who was at his home on the Chesapeake Bay in St. Michaels, Md., about 45 miles east of Washington.
Nothing occurred during the 2 hours and 5 minutes of the transfer that required Cheney to take official action, Stanzel said.
First lady Laura Bush was in Midland, Texas, celebrating her mother's birthday. The president spoke with her by phone before and after the colonoscopy.
Stanzel said the exam was performed under what he called "monitored anesthesia care," not general anesthesia. Under general anesthesia, a patient loses consciousness. Stanzel said Bush was asleep but responsive during the colon check. The medical team stopped administering anesthesia at 7:41 a.m. EDT; Bush was up 3 minutes later.
During the 31-minute procedure, Bush was sedated with a drug called propofol.
"The advantage is that it works faster and wears off considerably faster than the standard agents," Weinberg said. He said some other drugs can leave a person groggy for hours after a colonoscopy.
After the examination, Bush ate breakfast with chief of staff Joshua Bolten, White House counsel Fred Fielding and national security adviser Stephen Hadley. He played with his dogs, rode his bike in the afternoon for more than an hour around the presidential compound in the Catoctin Mountains of western Maryland, and received informal briefings from Bolten and Hadley.
"The president was in good humor and will resume his normal activities at Camp David," Stanzel said.
Dr. Richard Tubb, the president's doctor, supervised the colonoscopy, performed by a team from the Bethesda medical center.
For the general population, a colonoscopy to screen for colon cancer is recommended every 10 years. But for people at higher risk, or if a colonoscopy detects polyps, follow-up colonoscopies often are scheduled in three- to five-year intervals.
Doctors discovered that Bush had two polyps during a similar scan in 1998 and two more were found during a colon screening in 1999, while Bush was governor of Texas. That made the 61-year-old president a prime candidate for regular examinations. The screening done in 2002 revealed no polyps or abnormalities.
"The more polyps you have, the more frequent you need to have a colonoscopy," said Dr. Roshini Rajapaksa, a gastroenterologist at New York University Medical Center who was not involved in the exam. "But because they're small in size, it's not that worrisome even though he had five."
According to the National Cancer Institute, an estimated 112,340 new cases of colon cancer and 41,420 new cases of rectal cancer will be reported this year. About 52,000 people in the United States will die this year of colon and rectal cancer.
Given the war in Iraq and terrorist threats across the world, the president invoked Section 3 of the 25th Amendment "out of an abundance of caution," Stanzel said. The amendment, approved in 1967, four years after President Kennedy was assassinated, provides for the temporary or permanent transfer of presidential power in case the president is unable to fulfill the duties of the office.
It had been used only twice before.
In July 1985, President Reagan had colon cancer surgery and turned over power to his vice president, George H.W. Bush. During the president's colorectal screening on July 29, 2002, Bush relinquished powers to Cheney for more than two hours.
This transfer of power took place with letters Bush faxed to House Speaker Nancy Pelosi, D-Calif., and Sen. Robert Byrd, D-W.Va., president pro tempore of the Senate. Bush reclaimed his authority at 9:21 a.m. EDT with follow-up letters to both lawmakers.
"This letter shall constitute my written declaration that I am presently able to resume the discharge of the Constitutional powers and duties of the office of the president of the United States," Bush's one-paragraph letter said.
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Background on colonoscopy: http://tinyurl.com/2nfltw