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

A rare combined variation of the coeliac trunk, renal and testicular vasculature / 대한해부학회지

The authors report a rare variation of the coeliac trunk, renal and testicular vasculature in a 27-year-old male cadaver. In the present case, the coeliac trunk and superior mesenteric artery was replaced by a modified coeliacomesenteric trunk formed by hepato-gastric and superior mesenteric arteries. Here the hepato-gastric artery or trunk contributed towards the total hepatic inflow as well as a gastro-duodenal artery. A separate right gastric artery and an additional superior pancreatico-duodenal artery was also found in addition with a retro-aortic left renal vein and a bilateral double renal arterial supply. The aforementioned coeliac trunk variation, to our knowledge, has never been reported before and this variation combined with the renal vasculature requires careful surgical consideration.

A Study of Anomalies of Left Renal Vein.

Introduction: The left renal vein is preferred over the right in renal transplantation because of its longer length. It is important for the surgeons to know the course of the left renal vein and whether it is pre-aortic or not to avoid unexpected hemorrhage and even death. There are considerable no of radiological studies on Retro aortic Left Renal Vein but anatomical studies other than the Japanese were not found in the literature. In view of its anatomical, embryological, clinical and surgical importance the present study was undertaken. Materials and Methods : The present study was conducted in 60 adult cadavers (10 female and 50 male) allotted to 1st M.B.B.S and M.D P.G students at Pinnamaneni Siddhartha institute of medical sciences & research foundation Gannavaram & N.R.I. Academy of Medical Sciences, Andhra Pradesh, India for routine dissection over a period of 5 consecutive years (2010-2015). Results: Left Renal Vein anomalies can be classified into 4 types in the literature.Type1 is the most common in its occurrence followed by type 3,2and 4.Type 4 was rarely reported .In the present study the percentage of incidence of type 1, type 2 and type3 are 6.6%,1.6%,3.3% respectively and type 4 was not observed. Conclusion: Knowing the variable expressions of the renal venous system allows better understanding of the clinical events. Pre operative CT can be considered mandatory as it helps in safe surgical outcome particularly in the retro peritoneal area.

The Rare Case of Left Retro Aortic Renal Vein: Surgico Anatomic Ramifications of the Abnormality.

The Article presents a rare Anomoly of Course of Renal Vein where it lies behind the Aorta . The Consequence of failure to Recognize this clinical entity can be dangerous if left Undetected. This Vein is located between the Aorta and the Vertebrae. The Patient presented with left Flank Pain and on Evaluation was found to have Left RetroAortic Renal Vein.

Anomalous drainage of left renal vein.

A rare anatomical variation found during routine anatomical dissection for teaching purposes in which the retro aortic left renal vein opened in to the left common iliac vein instead of inferior vena cava. Retro aortic left renal vein is an uncommon anomaly in the development of Inferior Vena cava (IVC) and its collaterals. It may courses behind the abdominal aorta to enter the IVC. According to the reviewed literature, incidence of a case like this is around 0.16% and is only scarcely described in the literature. The embryological and clinical significance of the above variations have been highlighted in this communication.

The double retro-aortic left renal vein / 대한해부학회지

The renal veins drain the kidney into the inferior vena cava and unite in a variable fashion to form the renal vein. The left renal vein is normally located in front of the aorta. However, the retro-aortic renal vein may course posterior to the aorta due to embryological developmental anomalies. During educational dissection, a rare variation of the left renal vein was found in a 66-year old male cadaver. The double retro-aortic renal veins coursed behind the aorta to drain into the inferior vena cava. The superior retro-aortic renal vein drained into the inferior vena cava at the lower border of the L2 vertebra, and the inferior retro-aortic renal vein drained into the inferior vena cava at the upper border of the L4 vertebra. Such a variant is rare, and is a clinically important observation which should be noted by vascular surgeons, oncologists, and traumatologists.