[Conservative and reconstructive surgery of the superior longitudinal sinus]

Area of Science:

• Neurosurgery
• Vascular Anatomy
• Cerebrospinal Fluid Dynamics

Context:

• The superior longitudinal sinus (SLS) is encountered in neurosurgical practice during trauma, tumor resection (especially parasagittal meningiomas), and other interventions.
• Understanding the anatomical and physiological features of the SLS, including emissary vein entry, Willis cords, Pacchionian bodies, and pressure gradients, is crucial for surgical planning.

Purpose:

• To review the anatomophysiological characteristics of the superior longitudinal sinus (SLS) relevant to neurosurgical interventions.
• To discuss surgical techniques for managing SLS injuries and tumor involvement, emphasizing structural conservation.
• To present experimental sinus surgery in dogs and its application in human cases.

Summary:

• The SLS's unique structure protects it from increased intracranial pressure. Surgical approaches must preserve its dual dural and venous layers.
• Experimental canine studies involved venous autografts with dura mater for sinus wall reconstruction.
• Clinical applications include treating parasagittal meningiomas and sinus injuries, with shunting reserved for specific edematous conditions.

Impact:

• Provides a foundation for understanding SLS anatomy and physiology in neurosurgical contexts.
• Highlights the importance of preserving sinus integrity during surgical procedures.
• Offers insights into reconstructive techniques for sinus injuries and tumor invasion.