Wikileaks confirms blood clot.
In fact Secretary Clinton's neurologist at Columbia, who I heard from yesterday, is a top national expert on strokes, brain clots, bleeds, and head trauma. She couldn't be in better hands. Her condition, Right Transverse Sinus Thrombosis, is a fancy term for a blood clot forming in one of the main sinuses (a drain) of the brain. This clot can lead to brain swelling or a stroke, and it is certainly life threatening. However, in a situation where it is found incidentally and no symptoms have been exhibited, the risk is less because the brain's venous system may have found another way to drain while the clot is in the process of being dissolved.