Saturday, 3 December 2011

Renal rule 12 : Renal agenesis


Contrast enhanced CT shows no left kidney in the renal fossa. The splenic flexure of the colon (SF) has moved into the left renal fossa. Evidence that this is renal agenesis includes unusually flattened appearance to the left adrenal gland (arrow) known as the "lying down adrenal". In the absence of the left kidney, this adrenal gland does not have the typical splayed limbs.

3D coronal reconstruction of CT IVP in the excretory phase shows normal left kidney but no right kidney in renal fossa or anywhere along the path of ascent of the kidney from the right pelvis through the right paravertebral regions consistent with right renal agenesis.

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