Vice President Dick Cheney was briefly examined at a Washington hospital Tuesday after experiencing discomfort in his left leg, where a blood clot was discovered earlier this month.
Cheney's office says the doctors conducted another ultrasound image of the clot in his leg, which showed there was no extension or complication of the clot. Doctors say Cheney's blood thinning medication is working.
The vice president later returned to the White House to resume his schedule.
Cheney has had four heart attacks, although none since taking office in 2001.
The blood clot was discovered shortly after Cheney returned from a trip that took him to Australia and South Asia. Doctors say there is an increased risk of developing blood clots from long flights because of prolonged periods of immobility.
Some information for this report was provided by AP and Reuters.