Magnetic resonance imaging-based classification of trigeminal nerve-superior cerebellar artery relationships

Although SCA-TN contact is relatively frequent, only particular medial and superior configurations seem to predispose individuals to symptomatic compression. These observations are consistent with cadaveric and surgical evidence highlighting the significance of root entry zone contact in trigeminal neuralgia. Vascular contact alone should not serve as a diagnostic criterion; instead, geometric configuration and related nerve alterations must also be incorporated into preoperative assessment.