IMAGING OF SUPERIOR SAGITTAL SINUS THROMBOSIS: A REVIEW
Abstract
Ten cases of superior sagittal sinus thrombosis have been retrospectively reviewed. The focus of this study is on the CT appearance of the superior sagittal sinus thrombosis. The radiological diagnosis of superior sagittal sinus thrombosis in the present study includes either the “empty delta sign” on contrast-enhanced CT or the absence of flow on MR venography or conventional angiography. The pathognomonic empty delta sign was presented in 5 cases (50%). Seven cases developed focal parenchymal lesions, all of which were venous infarct with or without intracerebral hemorrhage at parasagittal frontoparietal region. In case of superior sagittal sinus thrombosis that lacks specific imaging sign, recognition of the pattern of hemorrhagic infarct may suggest the CTdiagnosis of this disorder. MR venography or conventional angiography has also been used to confirm the diagnosis of superior sagittal sinus thrombosis. Among the other common causes of superior sagittal sinus thrombosis, rarely oral amphetamine abuse SEP. - DEC. 1999. Volume V Number II! was reported in one of our cases. Detailed findings will be presented.
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