Secretary of state hospitalized at New York-Presbyterian hospital after follow-up exam found the clot
Was treated for a concussion earlier this month after fainting while she battled a stomach virus
Doctors expect a full recovery and say there has been no brain damage
'In all other aspects of her recovery, the Secretary is making excellent progress and we are confident she will make a full recovery. She is in good spirits, engaging with her doctors, her family, and her staff,' Drs Lisa Bardack and Gigi El-Bayoumi said in a statement.
A clot occurs when a blockage builds up, either from partial thrombus (coagulated blood) or an outside compression. When the vein becomes blocked, the coagulated blood may extend to veins draining the area, which could lead to a lack of oxygen and tissue death.
For Clinton, 'the particular vein they're talking about, there are enough other areas for the blood to travel through so it doesn't build up in the brain,' Dr Sanjay Gupta told CNN.
The condition can be treated with blood thinners administered over several months until the clot breaks down.
A distraught-looking Chelsea Clinton visited her mother in the hospital this afternoon as she recovered from the clot, which stems from a concussion earlier this months.
The former First Daughter was seen walking out of New York-Presbyterian Hospital looking troubled.
Her mother is likely to ring in the New Year from her hospital suite so her doctors can keep a close eye on her condition.
Clinton, 65, was admitted to the hospital on Sunday and CBS New York reports that doctors want to monitor her for at least another 48 hours.