Gyral abnormalities in the early stage of superior sagittal sinus thrombosis.
We report computed tomography (CT) features in a case of segmental thrombosis of the superior sagittal sinus. On the initial cranial CT scan, both frontal cortices showed focal areas of slightly increased attenuation. The lesions were isointense on magnetic resonance (MR) images no matter what pulse sequence was used, except on fluid-attenuated inversion recovery images, which showed curvilinear sulcal hyperintensity. On postcontrast T1-weighted images, curvilinearly enhancing structures were apparent in both frontal cortical sulci. No lesion appeared on follow-up CT or in MR images. We speculated that the areas of slightly increased attenuation in the cortices represented blood congestion in the cortical veins, venules and capillaries without serum leakage. Cranial CT images should be carefully interpreted to avoid overlooking subtle lesions.
Uchino
Akira
A
Department of Radiology, Saga Medical School, 5-1-1 Nabeshima Saga, Saga, 849-8501, Japan. uchino@med.saga-u.ac.jp
Eriguchi
Makoto
M
Sawada
Akihiro
A
Takase
Yukinori
Y
Nishihara
Masashi
M
Kurohara
Kazuhiro
K
Kuroda
Yasuo
Y
Kudo
Sho
S
D000368:Aged; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D020225:Sagittal Sinus Thrombosis / Q000000981:diagnostic imaging* / Q000473:pathology; D014057:Tomography, X-Ray Computed