Three Hours. Four Hundred Pages.

On Friday, Sen. McCain will allow reporters to review his medical history.

May 22, 2008— -- If John McCain wins in November, he would be the oldest first elected president in U.S. history. This fact has not been entirely lost on voters.

According to a February 2008 poll by the Pew Research Center, 26 percent of registered voters think McCain is too old to be president. This number rises to 32 percent when voters are told that the Arizona senator is currently 71 years old.

In an effort to allay these concerns, the McCain campaign is making it possible for five television networks, three news wires, the Arizona Republic and the Washington Post (as print pool) to review a portion of the presumptive Republican nominee's medical records on Friday.

The medical information being released covers 2000 to the present and will include information about the melanoma which McCain's doctors diagnosed in August 2000, per ABC's Susan Wagner, Bret Hovell, and Justin Anderson.

The medical information is set to be rolled out near Phoenix, Ariz., in three phases on Friday morning beginning at 10:30 am ET:

- Physical inspection of 400 pages of medical records

- Written medical summary provided by campaign to all media

- Conference call with Mayo Clinic physicians

The conference call, which will be open to any news outlet, takes place at 2:00 pm ET. The McCain campaign is also planning to post a summary on its website.

Joining McCain spokesperson Jill Hazelbaker on Friday's call will be:

--Victor F. Trastek, M.D., CEO, Mayo Clinic Arizona;

--Dr. John D. Eckstein, M.D., Internal Medicine, Mayo Clinic;

--Suzanne M. Connolly, M.D., Dermatology, Mayo Clinic; and

--Michael L. Hinni, M.D., Otolaryngology/Head and Neck Surgery, Mayo Clinic

For those news organizations examining the records in person, the McCain campaign has established certain ground rules:

--Each news outlet will be allowed the same two people in the room for three hours.

--There will be no cell phone or internet use while reviewing the records.

--No cameras will be permitted into the room.

--No photocopying of the records.

--No document can be taken outside of the room.

Dr. Tim Johnson, ABC News' medical editor, weighed in on McCain's health on the Thursday edition of "World News with Charles Gibson."

"The actuarial tables say if you make to 71 in overall good health your life expectancy is about 16 years," said Johnson. "That would be to about to age 87. I think that's surprising to many people."

"Much more difficult to predict," he added, is "any change in mental acuity. At age 71 there's about a 30 percent chance of developing serious memory loss or even dementia. But experts point out that with aging -- maybe some skills such as judgment get better."

"So, Charlie," he concluded, "the old cliché is certainly true in this case. Time will tell"

Here's the one-page medical summary that McCain's campaign released in March 2008:

John McCain has regular medical checkups at the Mayo Clinic in Phoenix, Arizona. His doctors consider him in very good health.

His cardiopulmonary health is excellent.  His blood pressure has always been good.  He had a stress echocardiogram in 2005 which showed excellent heart function and no evidence of myocardial ischemia before or after exercise.  He takes Vytorin for cholesterol, which is now well controlled at 155 (LDL is 83, HDL is 34, and triglycerides is 190).   The Senator maintains a highly active schedule and gets exercise regularly.  In August of 2006 he hiked the Grand Canyon rim to rim and had no cardiopulmonary symptoms.

In August of 2000, Senator McCain had invasive melanoma (Stage IIA) on his left temple, which was 2 cm in diameter - the size of a dime.  The depth was 0.22 cm.  This was fully excised with wide margins (2 cm in each direction).   At the same time, the Senator had a very extensive lymph node dissection to determine whether the small melanoma had spread elsewhere.  This involved an incision down the side of his face and the partial removal of lymph nodes in his neck.  No spread of melanoma was found in any of these locations.  However, this preventative procedure had cosmetic side effects for Senator McCain, including swelling at the site of the incision. Thus, the large scar and attendant swelling that Senator McCain has on the left side of his face is not the result of the melanoma itself, which was small and localized, but rather of the more extensive surgical procedure utilized out of a high degree of caution.

Senator McCain has had several non-melanoma (basal cell and squamous cell) cancers removed, as well as three occurrences of non-invasive (in situ) melanomas, which were removed from his left shoulder in 1993, his left upper arm in 2000, and his nose in 2002.  At no time was there any evidence that these localized melanomas had spread beyond the surface of the skin.  He has had no recurrence of melanoma, and his skin is regularly monitored with an average of 3-4 dermatologic exams per year since 2000.

Senator McCain was a Navy pilot in Vietnam and his plane was shot down over Hanoi in October of 1967.  He broke both arms and a leg after ejecting from his plane.  He was subsequently a prisoner of war in Hanoi for 5.5 years, during which time he was beaten repeatedly and suffered fractures of both shoulders which "healed" without definitive treatment.  He also had numerous rib fractures and a severe injury to his right knee.  When he returned to the USA he had two operative procedures to improve his knee function.  His range of motion of both shoulders is significantly limited, both actively and passively, to only 80 degrees elevation and abduction.  However, his orthopedic injuries do not impact his energy levels or activities.

The Senator currently takes the following medications: Vytorin (for lipid control), baby aspirin, and a multi-vitamin.  On occasion, he takes Claritin or Flonase for allergies.

The kicker:

"I am older than dirt and have more scars than Frankenstein."

--John McCain (numerous)

On the campaign front. . .

BARACK OBAMA

-- 12:30 pm ET: Attends Cuban Independence Day Celebration, Miami, FL

-- 3:30 pm ET: Attends rally with voters, Sunrise, FL

HILLARY CLINTON

-- 2:00 pm ET: Attends event with voters, Brandon, SD

-- 6:30 pm ET: Attends town hall meeting with voters, Brookings, SD

At the White House and Beyond. . .

PRESIDENT BUSH

-- 11:15 am ET: Speaks on World Trade Week, Washington, DC

NATIONAL ASSOCIATION OF REALTORS

-- 10:00 am ET: Releases the April report on existing home sales, Washington, DC

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