Anatomical Structure and Location of the Ureters

Description

Posterior anatomy of the male thorax and abdomen frames the paired ureters as slender retroperitoneal conduits descending from the renal hila toward the pelvis. Each ureter courses inferiorly along the anterior surface of psoas major and remains lateral to the abdominal aorta, while lying anterior to the iliac vessels as it approaches the pelvic brim. The abdominal aorta and inferior vena cava dominate the midline, with major branches supplying the liver and intestines shown in red (arteries) and blue (veins). Lungs and heart sit superiorly, partly cropped, with the liver on the right and coiled small and large bowel occupying the mid to lower abdomen. Emphasis on the ureter’s relationship to the great vessels is practical. At the pelvic brim the ureter crosses the common iliac artery near its bifurcation, a familiar landmark during colorectal, vascular, and retroperitoneal oncologic surgery, and a common site where ureteral injury occurs when the structure is mistaken for a gonadal vessel or fibrotic band. Ureteric calculi also tend to lodge at predictable narrowings, and this posterior view helps teach how that pain can track along the flank as the ureter descends beside psoas, and why cross sectional imaging descriptions often reference the iliac crossing. Use this artwork to annotate retroperitoneal anatomy in gross anatomy courses, to illustrate ureteral course and common stone impaction points in urology teaching, or to support operative notes and figures for abdominal aortic aneurysm repair, pelvic lymph node dissection, and sigmoid colectomy where ureter identification is mandatory. Anatomical accuracy verified by SciePro's Medical Advisory Board.