[Right-sided duplication of the inferior vena cava]. / Duplication droite de la veine cave inférieure.

An infrarenal duplication of the inferior vena cava with both channels lying on the right side of the aorta was fortuitously found during an abdominal Computed Tomography performed on a 52 year-old woman. Only two same cases seem to be reported in the literature. This very uncommon abnormality probably results from persistence of the infra-renal part of the right subcardinal vein. Radiologists have to be aware of this right-sided ipsilateral duplication for it may be a trap in abdominal imaging as well as "classical" inferior vena cava duplication located on both sides of the abdominal aorta.

Two rare anomalies of the left renal vein.

Two uncommon anatomical variations of the left renal vein were found on dissected specimens: a circumaortic venous ring and a retro-aortic bifid left renal vein. The first anomaly results from a persistence of the embryonic renal venous collar. The second one would be related to a particular pattern of left inferior vena cava. Both abnormalities have to be known for they may be undetected or be misleading in imaging. Other clinical implications are also considered.

Dorsal pancreas agenesis: computed tomography appearance with three-dimensional volume rendering reconstruction.

We report a case of a very rare congenital variant consisting in a dorsal (or left) pancreas agenesis due to the lack of development of the dorsal embryonic bud of the gland. This variant is characterized using helical computed tomography (CT). Three-dimensional (3D) computed tomography reconstruction, especially using the volume rendering technique, is very helpful for assessing this entity, which it is important to recognize due to its potential clinical implication (diabetes mellitus). Associated variants of abdominal vessels were also clearly seen in our patient with this technique, including a hepatomesenteric trunk and left retro-aortic renal vein.