References in periodicals archive ?
To the Editor: With the advent of antibiotics application, intracranial complications of paranasal sinusitis, including meningitis, intracranial abscess, subdural empyema (SDE), epidural abscess, cavernous sinus thrombosis, and thrombosis of other dural sinuses, have become uncommon.[1] However, SDE is still a life-threatening disease entity.
It consists of superficial and deep cerebral veins and dural sinuses. The cerebral veins coursing beneath deep surface of arachnoid matter are further drain to the nearest dural venous sinuses.
Dural venous sinus thrombosis is more common than cortical vein thrombosis and the dural sinuses may become occluded secondary to skull base infections, hyper coagulable states, dehydration and compression from meningiomas or other duraltumours.
Absence of flow void with alteration of signal intensity in the dural sinuses and/or veins should prompt high suspicion [6].
Sometimes, metastatic lesions can produce mild pain or, with dural sinuses involvement, an increase in intracranial pressure (ICP), leading patients to seek medical advice [13].
Arachnoid granulations represent growths of arachnoid membrane into the dural sinuses through which CSF enters the venous system [1] and are macroscopically visible [2].