Ectopic origin of main renal artery

Area of Science:

• Vascular anatomy
• Embryology
• Medical imaging

Background:

• The main left renal artery typically arises from the abdominal aorta below the superior mesenteric artery.
• Anatomical variations in renal artery origins can impact surgical planning and diagnostic interpretations.

Observation:

• Two cases presented with an unusually high origin of the single main left renal artery.
• In the first case, the left renal artery originated as the most cephalad branch of the abdominal aorta, superior to the celiac artery.
• In the second case, the left renal artery originated from the celiac axis.

Findings:

• These findings highlight rare variations in the origin of the main left renal artery.
• The observed origins represent significant deviations from typical renal artery anatomy.

Implications:

• Understanding these rare origins is crucial for accurate angiographic interpretation.
• Knowledge of these variations can aid surgeons in planning procedures involving the abdominal aorta and visceral arteries.
• Embryologic factors may play a role in the development of such anomalous renal artery origins.