Persistent fetal lobulation of the kidneys
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At the time the article was created Yuranga Weerakkody had no recorded disclosures.View Yuranga Weerakkody's current disclosures
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Persistent fetal lobulation is a normal variant seen occasionally in adult kidneys. It occurs when there is incomplete fusion of the developing renal lobules. Embryologically, the kidneys originate as distinct lobules that fuse as they develop and grow.
It is often seen on ultrasound, CT or MRI as smooth indentations of the renal outline in between the renal pyramids.
They should be distinguished from renal cortical defects, which generally overlies the pyramids.