A rare anatomical variant of the relationship between a branch of the superior cerebellar artery and the rootlets of the trochlear nerve: illustrative case

Understanding complex anatomical variations of the SCA and its relationship to CN IV is crucial for accurate diagnosis of the trochlear nerve dysfunction and for effective surgical planning. A thorough understanding of these variations enables physicians to anticipate potential challenges and adapt their approach accordingly. Intraoperative identification of unexpected vascular patterns underscores the importance of the surgeon's knowledge of anatomical variability, which may significantly impact both safety and surgical strategy. https://thejns.org/doi/10.3171/CASE25653.