DrVirgo
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33. A 3-week-old female infant with dehydration develops bilateral renal vein thrombosis, but only the right kidney infarcts. Collateral drainage via which of the following veins most likely prevented infarction of the left kidney?
A) Left ovarian
B) Left third lumbar
C) Splenic
D) Superior mesenteric
A??
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| DrVirgo
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A?
Because L. Ovarian goes into L Renal which goes into IVC.
But R. Ovarian goes into IVC directly.
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| robin082006
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Agree A
Left renal recieve left gonadal, left suprarenal, left inferior phrenic vein before joining IVC
No anastomose vein with right renal, which enters IVC.
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| robin082006
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Agree A
Left renal recieve left gonadal, left suprarenal, left inferior phrenic vein before joining IVC
No anastomose vein with right renal, which enters IVC.
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| robin082006
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Agree A
Left renal recieve left gonadal, left suprarenal, left inferior phrenic vein before joining IVC
No anastomose vein with right renal, which enters IVC.
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| robin082006
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Agree A
Left renal recieve left gonadal, left suprarenal, left inferior phrenic vein before joining IVC
No anastomose vein with right renal, which enters IVC.
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| DrVirgo
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Thanks (X4)
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| girl^interrupted
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Please explain. Didnt understand the basic concept of how an ovarian collateral helped the left kidney to survive? If the left gonadal etc drain into left renal and left renal drains into IVC, both left ovary and left kidney should be infarcted if left renal vein was to be thrombosed? Just didnt get the concept.
Will appreciate a reasonable explanation.
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| r_albayunen
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are we talking about drainage or irrigation here?
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| girl^interrupted
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There should have been infarction of left ovary along with the infarction of left kidney if we really go by the question. I still didnt understand it.
The stem should have been asking about the ovarian infarction.
Please, dr virgo do explain.
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| thegodsmustbecrazy
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guys im very very confused with this question.
and agreee with you girl interrupted that if lt renal vein thrombosed then it shud ultimately affect lt suprarenal and lt ovary also as they DRAIN into the lt renal v.
and one thing i know for sure is that the left renal vein has better collaterals than the rt and one of the important collaterals is lumbar vein
SO WILL SOMEBODY PLEASE CLARIFY.
THANKS.
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| DrVirgo
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What do you guys think the answer is? Now I'm confused too... Could it be C) Splenic???
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| kumar81
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B is the answer coz they r asking abt collateral circulation which is renal vein---> lest lumbar-----> hemiazygous----> IVC
so it prevents infact in left kidney.
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| DrVirgo
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Lets look at this picture, and see if we can all agree on the right answer.
Attached Files:
IVC.gif (10 KB, 88 downloads)
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| krsna
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i think B is the ans...cos left renal vein also sometimes has hemiazygos tributary...and the lumbar veins connect common iliac v., internal iliac veins, hemiazygos veins etc.
hope this helps
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| waqastariq
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well what I think is:
first of all we shud consider that we are talkin about VEINSS not arteries 
second of all...if there is thrombosis in renal vein...blood starts flowing towards the GONADS from left kidney...and cause varicocele in males ...here we are talkin about female soo.....answer is A....in my opinion
I hope it'll help
@ krsna .... in Step 1 .. you dont go for the anamolies..they ask for the USUAL course of structures..
@ drvirgo... he has given a very beautiful diagram .. please look at it...and see.. left lumber 3rd is not connected to left renal vein
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| Musuq
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Q: A 3-week-old female infant with dehydration develops bilateral renal vein thrombosis, but only the right kidney infarcts. Collateral drainage via which of the following veins most likely prevented infarction of the left kidney?
I would go with waqastariq
a) left Ovarian vein
In males...
Edited by Musuq on 05/30/06 - 01:15 PM
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