This is a blood clot in the dural venous
sinuses, which drain blood from the brain, and was diagnosed following a week of severe migraines.
Alper et al  used time of flight magnetic resonance venography in assessing the normal anatomy of dural venous
Current endovascular treatment options of dural venous
sinus thrombosis: a review of the literature.
(11) Other intracranial findings may include: subdural hygromas or hematomas, enlargement of the pituitary gland, ventricular collapse, engorged dural venous
sinuses or plexus, and superficial siderosis.
The cerebral veins coursing beneath deep surface of arachnoid matter are further drain to the nearest dural venous
It is also important to note that erythrocytosis can present with a subarachnoid hemorrhage (nontraumatic by case reports) and dural venous
sinus thrombosis (4); therefore, suspicion of erythrocytosis should be confirmed by MRI.
Multiplanar postcontrast images showed diffuse pachymeningeal enhancement, sagging of the SCC, narrowing of the suprasellar cisterna, enlargement of the pituitary gland, and distension of the dural venous
sinuses (Figure 3).
Depressed skull fracture over superior sagittal sinus (SSS) is the commonest type of dural venous
sinus injury with significant morbidity and mortality.
Although the exact mechanism is unknown, it is highly indicative that CSF hypovolemia causes decrease of intracranial pressure, thereby causing enlargement of dural venous
sinuses that becomes an important factor in the pathogenesis of subdural hemorrhage.
Classically, it may show hyperdensity of a cortical vein or dural venous
sinus (Figures 4(b) and 4(c)) .
Repeat MRI scan of the brain with and without contrast and magnetic resonance venogram (MRV) 10 days after the initial imaging showed significant improvement in the "mass" with patent dural venous
sinuses and cortical veins (Figure 1(b)).
Patient had a history of acute left middle cerebral artery infarct with dural venous
sinus thrombosis and is on oral anticoagulation with tablet Warf.