Former President Bill Clinton could be out of the hospital and back home by early next week to recuperate from more surgery on his chest. Clinton, 58, was scheduled to check himself into New York-Presbyterian Hospital/Columbia University Medical Center early Thursday for a low-risk operation to remove fluid and scar tissue that developed in his left lung after his quadruple heart bypass six months ago. Doctors were expected to perform the new procedure sometime in the morning. It is done through a small incision or with a video-assisted thoracoscope inserted between the ribs. On Wednesday, Clinton was in Florida at a charity golf tournament to benefit tsunami victims. He appeared relaxed, joking about his game and saying he wasn't worried.