case_images: PMC11828705_01
case_images: T2-weighted MR demonstrating left eye adduction due to vascular loop syndrome (arrow).
case_images: cureus-0017-00000077483-i01.jpg
case_images: PMC11828705_01_cureus-0017-00000077483-i01.jpg
case_images: FIG1
case_images: The left globe was mildly abducted in relation to the right (Figure 1).
case_images: A) Axial CT scan shows the basilar artery intending the left sixth nerve at the exit zone (the vertical arrow shows the basilar artery and the curved arrow shows the left sixth nerve). B) The FIESTA sequences show the basilar artery with indentation of the brain stem at the exit zone (the up arrow shows the basilar artery, the down arrow shows the normal right sixth nerve, and the left arrow shows the compressed left sixth nerve).
case_images: cureus-0017-00000077483-i02.jpg
case_images: PMC11828705_01_cureus-0017-00000077483-i02.jpg
case_images: FIG2
case_images: Upon brainstem evaluation, an indentation of the left lower brainstem by a tortuous basilar artery, abutting the left abducens nerve exit zone, was noted (Figure 2).