Renal vein anomalies
Updates to Article Attributes
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There are several variations in renal venous anatomy. Some of these are specific to the left renal vein.
Left renal vein anomalies are generally classified into four types 2:
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type I
- ventral pre-aortic limb of the left renal vein is obliterated, but the dorsal retro-aortic limb persists and joins the IVC in the normal position
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type II
- results from the obliteration of the ventral pre-aortic limb of the left renal vein, and the remaining dorsal limb turns into a retro-aortic left renal vein (RLRV)
- left renal vein lies at the level of L4 to L5 and joins the gonadal and ascending lumbar veins before joining the IVC
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type III
- is the circumaortic left renal vein or venous collar - due to persistence of subsupracardial and intersupracardial anastomoses and the dorsal limb of the left renal vein.
- if all small retroaortic veins that empty into the IVC are considered, the incidence of a circumaortic left renal vein could be as high as 16%
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type IV
- the ventral pre-aortic limb of the left renal vein is obliterated, and the remaining dorsal limb becomes the RLRV
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other (non-classified)
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supernumerary renal veins
-: can involve either kidney
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supernumerary renal veins
See also
-<a href="/articles/supranumerary-renal-veins">supernumerary renal veins </a>- can involve either kidney</li></ul>- +<a href="/articles/supranumerary-renal-veins">supernumerary renal veins</a>: can involve either kidney</li></ul>
Images Changes:
Image ( update )
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Case 3: retro aorticretroaortic left renal vein
Image 1 CT (C+ portal venous phase) ( update )
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Case 1: retro-aorticretroaortic left renal vein
Image 2 CT (C+ arterial phase) ( update )
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Case 2: circum-aorticcircumaortic left renal vein
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