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Venous abnormalities incidentally accompanied by renal tumors
Takeshi Matsuura1, Yasuhiro Morimoto, Kazuhiro Nose
1Department of Urology, Kinki University School of Medicine, Osaka, Japan. takmat@med.kindai.ac.jp
Urologia Internationalis
|August 28, 2004
Summary
Retroperitoneal venous abnormalities are common, but multiple renal veins are often missed preoperatively. Urologists need awareness of these venous anomalies to prevent surgical complications.
Area of Science:
- Urology
- Vascular Surgery
- Radiology
Background:
- Retroperitoneal venous abnormalities can pose surgical risks.
- Preoperative identification of these anomalies is crucial for patient safety.
Purpose of the Study:
- To evaluate the incidence of retroperitoneal venous abnormalities.
- To assess the preoperative diagnostic accuracy of imaging techniques for these anomalies.
Main Methods:
- Retrospective review of renal tumor cases (1993-2002).
- Analysis of imaging (CT) and operative findings for venous abnormalities.
- Calculation of incidence rates and diagnostic accuracy.
Main Results:
- Multiple renal veins occurred in 5.3% of surgically confirmed cases but were not detected preoperatively.
- Other anomalies like IVC duplication and retroaortic left renal vein were diagnosed preoperatively.
- Incidence of other major anomalies was 0.52% each.
Conclusions:
- While some retroperitoneal venous anomalies are readily diagnosed, multiple renal veins present a diagnostic challenge.
- Urologists require knowledge of both congenital and acquired venous anomalies for safe surgical practice.