Analysis of anatomical variations of the main arteries branching from the abdominal aorta by multidetector computed tomography: A prospective study of 500 patients in a tertiary center

Introduction: Embryological development of the aorta being a complex process can lead to a variety of congenital variants. It may result in complications during abdominal laparoscopic and radiological interventions. Prior knowledge can identify the anatomy, which may require special attention at the time of surgery/interventions. Diagnostic imaging with multidetector computed tomography (MDCT) allows accurate and noninvasive preoperative evaluation. To identify and to evaluate the anatomical variation of major arteries branching from the abdominal aorta using MDCT. Material and Methods: Five hundred patients of different age groups referred to the Department of Radiodiagnosis, Dayanand Medical College and Hospital, Ludhiana, for MDCT abdomen were included in the study. It was performed on 128-slice MDCT Siemens Somatom Definition AS scan machine. Results: The results showed that anatomical variation occurs in a high percentage of patients. In the celiac axis, it occurred in 34.6% of cases, out of which the most common variant was a replaced right hepatic artery (3.7%). Celiacomesenteric trunk was observed in 0.2% of patient. Single renal artery was observed (43.2%) while accessory renal artery in 41.6% and early branching in 15.2%. Discussion and Conclusion: Prior knowledge of variations of these vessels can prevent iatrogenic injuries.