Variations In The Tributaries Of Inferior Vena Cava – An Anatomical Study In 50 Cadavers

Objectives: To document the variations in the tributaries of inferior vena cava (IVC) with double common iliacveins, retro aortic renal veins and to establish embryological and clinic-anatomical correlations of such variation.Materials and Methods: The findings were noted after thorough and meticulous dissection of the abdomen of 50cadavers in the department of Anatomy, Bhaskar Medical College, India. Photographic documentation of thevariation was also made.Results: Variations were reported in 2 cadavers.1) In one cadaver the left renal vein, after its origin from the kidney passed obliquely behind the abdominalaorta, joined the IVC at the level of 3rd lumber vertebra below the attachment of right crus of diaphragm. Left renalartery was normal in position.2) In another cadaver, there was a communication between the right internal and external iliac veins at the pelvicbrim anterior to the sacroiliac joint. From there two right common iliac veins, one appeared as continuation ofinternal iliac vein(common iliac vein I) and the other as a continuation of external iliac vein (common iliac veinII) ran upwards to join the IVC.Conclusion: The variation can be explained in the light of embryological development. In addition, knowledge ofsuch variation is important for carrying out surgical procedures in the abdomen