Microvascular Decompression for Trigeminal Neuralgia Caused by Venous Offending on the Ventral Side of the Root Entrance/Exit Zone: Classification and Management Strategy.

ABSTRACT:

Background

Trigeminal neuralgia (TGN) is typically caused by an offending artery (OA) but may also involve an offending vein. Venous offending on the ventral side of the root entrance/exit zone (VO-VREZ) is particularly challenging.

Objective

To analyze the rate and pattern of VO-VREZ and propose management strategy accordingly.

Methods

VO-VREZ was classified into 3 types based on its anatomical relationship with a nerve root (A, the vein was covered by the nerve root entirely; B, the vein was lateral to the nerve root; and C, the vein penetrated the nerve root) and 3 groups based on the absence/presence of offending artery (I, no OA; II, suspected OA; and III, definitive OA).

Results

The analysis included 143 cases with complete follow-up. Type A, B, and C acc

SUBMITTER: Wang W 

PROVIDER: S-EPMC8990805 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature