US Vice President Dick Cheney went to George Washington University Hospital Tuesday after experiencing discomfort in his left lower leg, where a blood clot was discovered a few weeks ago. After consulting with his doctors, Cheney was asked to return to the hospital for repeat ultrasound imaging of the deep venous thrombosis, or clot, in that leg, said spokeswoman Megan McGinn "The ultrasound revealed no extension or complication of the clot," she said. "His blood thinning medication was found to be therapeutic. These results are expected and reassuring, and the current course of treatment will continue." Cheney returned to the White House to resume his normal schedule, she said.