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Anomalies of inferior vena cava and left renal vein: risks in aortic surgery

S Shindo1, K Kubota, A Kojima

  • 1Second Department of Surgery, Yamanashi Medical University, Japan.

Annals of Vascular Surgery
|August 16, 2000
PubMed

Insights

Major venous anomalies, such as double inferior vena cava, can complicate abdominal aortic surgery, leading to unexpected bleeding. Preoperative imaging and intraoperative awareness are crucial for patient safety during these aortic procedures.

Area of Science:

  • Vascular Surgery
  • Anatomical Variations
  • Surgical Complications

Background:

  • Abdominal aortic surgery is common, but unexpected bleeding can occur.
  • Major venous anomalies are rare but significant causes of intraoperative complications.
  • Identifying these anomalies preoperatively is key to preventing surgical incidents.

Purpose of the Study:

  • To report the incidence and types of major venous anomalies found during abdominal aortic surgery.
  • To highlight the risks associated with these anomalies and their impact on surgical outcomes.
  • To emphasize the importance of preoperative imaging and intraoperative vigilance.

Main Methods:

  • Retrospective review of 166 patients undergoing abdominal aortic surgery over 6 years.
  • Analysis of identified major venous anomalies, including double inferior vena cava, preaortic iliac vein confluence, and circumaortic renal collar.
  • Correlation of anomalies with operative findings and complications.

Main Results:

  • Four patients (2.4%) had major venous anomalies: 2 with double inferior vena cava, 1 with preaortic iliac vein confluence, and 1 with circumaortic renal collar.
  • Preoperative imaging detected all anomalies except for the circumaortic renal collar.
  • Unexpected venous injuries occurred in two patients, one with a double inferior vena cava and another with a circumaortic renal collar.

Conclusions:

  • Major venous anomalies are infrequent but critical findings in abdominal aortic surgery.
  • Preoperative assessment and intraoperative awareness are essential to avoid venous injuries.
  • Patients with left renal vein anomalies and inflammatory abdominal aortic aneurysms face elevated surgical risks.

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