Falcine sinus

Falcine Sinus

The Falcine Sinus is a rare anatomical variation found in the dura mater, the outermost layer of the meninges. It is a venous sinus, a blood-filled space between the layers of dura mater, located in the falx cerebri, a sickle-shaped fold of dura mater that descends vertically in the longitudinal fissure between the cerebral hemispheres.

Anatomy

The Falcine Sinus, when present, runs along the attached margin of the falx cerebri, which separates the left and right cerebral hemispheres. It drains into the superior sagittal sinus, a more commonly found dural venous sinus that runs along the convex margin of the falx cerebri.

Clinical Significance

The presence of a Falcine Sinus is usually asymptomatic and is often discovered incidentally during neuroimaging studies such as MRI or CT scans. However, it can have clinical implications in neurosurgical procedures, particularly those involving the falx cerebri or the superior sagittal sinus. Knowledge of this anatomical variation is important to avoid complications such as venous infarction or hemorrhage.

See Also

• Dura mater
• Falx cerebri
• Superior sagittal sinus
• Venous sinus (brain)