Three-dimensional printing for preoperative rehearsal and intraoperative navigation during laparoscopic rectal cancer surgery with left colic artery preservation

Figure 2 Overview of the four types of inferior mesenteric artery classification. A: Schematic diagrams; B: Based on enhanced computed tomography display; C: Display using three-dimensional printing models. AA: Abdominal aorta; IMA: Inferior mesenteric artery; LCA: Left colic artery; SA: Sigmoid artery; SRA: Superior rectal artery.