Former President Clinton (search) has been able to walk around the hallway outside his hospital room as he recovers from surgery to remove scar tissue and fluid that developed after his heart bypass surgery six months ago, his spokesman said Monday.

Clinton, an avid sports fan who spent the day before his surgery last week golfing in Florida, "is also enjoying watching college basketball games as he continues his recuperation," spokesman Jim Kennedy said in a statement.

Kennedy did not say when the 42nd president might be released or give any other details. Clinton, who had the operation Thursday, had been expected to spend three to 10 days in New York-Presbyterian Hospital/Columbia University Medical Center (search). The hospital had no comment on Monday.

Doctors described the operation as a low-risk procedure to relieve a problem that crops up in only a fraction of 1 percent of bypass cases. They said the combination of fluid and scar tissue had reduced Clinton's left lung capacity by 25 percent.

Surgeons removed a rind of scar tissue nearly a third of an inch thick in some places.

The former president first noticed the problem when he suffered shortness of breath during his daily 4-mile walk near his home in Chappaqua, N.Y., about 40 miles north of Manhattan.