Anat Cell Biol.  2022 Sep;55(3):394-397. 10.5115/acb.22.066.

Multiple venous variations at the abdominopelvic region: a case report

• Nayak SB
• Vasudeva SK

• KMID: 2533369
• DOI: http://doi.org/10.5115/acb.22.066

Abstract

Knowledge of vascular variations of the abdominopelvic junction is of importance to surgeons, radiologists, orthopaedic surgeons and other medical disciplines. We report a rare combination of venous variations observed at the abdominopelvic junction of an adult male cadaver. The right common iliac vein was absent. The inferior vena cava was formed by the union of the right external iliac vein and the left common iliac vein. The right internal iliac vein was a tributary of the left common iliac vein. The left common iliac vein was larger than usual in size and its wall was adhered to the right common iliac artery. We discuss the functional, developmental and clinical issues related to the case.

Keyword

Iliac vein; Iliac artery; Inferior vena cava; Blood vessel; May-Thurner syndrome

Figure

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  Fig. 1 Dissection of the abdominopelvic junction showing the blood vessels. IVC, inferior vena cava; LCIV, left common iliac vein; RIIV, right internal iliac vein; REIV, right external iliac vein; AA, abdominal aorta; LCIA, left common iliac artery; LEIA, left external iliac artery; LIIA, left internal iliac artery; RCIA, right common iliac artery; REIA, right external iliac artery; RIIA, right internal iliac artery; IMA, inferior mesenteric artery; RPM, right psoas major muscle; RU, right ureter; LU, left ureter.

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  Fig. 2 Closer view of the variant blood vessels. The right external iliac artery has been pulled to the left to show the damaged wall of the left common iliac vein. IVC, inferior vena cava; LCIV, left common iliac vein; RIIV, right internal iliac vein; REIV, right external iliac vein; AA, abdominal aorta; REIA, right external iliac artery; RPM, right psoas major muscle; RU, right ureter; DVW, damaged wall of the left common iliac vein.

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  Fig. 3 A simplified, schematic diagram of the veins at the abdominopelvic junction. (A) The normal pattern of veins and (B) the variation observed. IVC, inferior vena cava; RCIV, right common iliac vein; LCIV, left common iliac vein; REIV, right external iliac vein; LEIV, left external iliac vein; RIIV, right internal iliac vein; LIIV, left internal iliac vein.

Reference

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