“…As Anson and McVay wrote in 1936, “the regular textbooks of gross anatomy offer little precise information concerning the points at which the visceral branches of the abdominal aorta arise, either in relation to the vertebrae or the bifurcation or in relation to one another” [ 1 ]. We found only a few studies documenting the possibilities of variation of these vertebral levels [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ]. The authors used a vertical grading system considering the intervertebral discs and the upper, middle, and the lower third of each vertebra, respectively [ 4 , 5 ].…”