Dynamic morphological changes of thrombosed lateral sinus pericranii revealed by serial magnetic resonance images.
BACKGROUND
Sinus pericranii (SP) is a rare venous anomaly involving an abnormal connection of the intracranial dural sinuses with the extracranial veins. Magnetic resonance (MR) imaging (MRI) with MR venography can detect the typically congested intra- and extracranial venous components of SP.


CLINICAL PRESENTATION
We report a rare case of lateral SP associated with the superior sagittal sinus, which might had already developed almost total thrombosis of the SP at the first MRI. As this patient had not presented with classical manifestations of SP on clinical or neuroradiological findings, the initial diagnosis of SP was difficult. Repeated MRI revealed dynamic morphological changes associated with reperfusion of the thrombosed SP via the cortical vein.


CONCLUSION
MR venography combined with gadolinium enhancement was useful for diagnosis of the SP with an extremely slow flow status.
['Ryorin|Mihori|M|', 'Morioka|Takato|T|', 'Murakami|Nobuya|N|', 'Suzuki|Satoshi O|SO|', 'Kawamura|Nobuko|N|']
D015901:Angiography, Digital Subtraction D002675:Child, Preschool D003287:Contrast Media D005682:Gadolinium D006801:Humans D007223:Infant D018810:Magnetic Resonance Angiography D008279:Magnetic Resonance Imaging D008297:Male D019635:Neurosurgical Procedures D020225:Sagittal Sinus Thrombosis D012535:Scalp D020779:Sinus Pericranii D054063:Superior Sagittal Sinus
MR venography Reperfusion Cortical vein Dural sinus