ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Thrombophlebitis in the brain. Coloured magnetic resonance imaging (MRI) angiograms comparing the blood vessels (white) of the brain and neck in a healthy 43-year-old (left), with those of a 48-year-old (right) with thrombophlebitis of the superior sagittal sinus, straight sinus and lateral sinus veins. Thrombophlebitis is phlebitis (vein inflammation) related to a thrombus (blood clot).
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