Presentation
Normal prominent structure found in the straight sinus. SCan otherwise unremarkable.
Patient Data
Age: 25 years
Gender: Female
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Prominent arachnoid granulation within the straight sinus.
Case Discussion
Arachnoid granulations, also known as a Pacchionian granulation, are projections of the arachnoid membrane (villi) into the dural sinuses that allow CSF entrance from the subarachnoid space into the venous system.