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Cake kidney

A cake kidney (also known as a fused pelvic kidney or lump kidney) is a rare congenital renal anomaly consisting of all renal tissue fused into one mass, lying in the pelvis, and giving rise to two separate ureters which enter the bladder in normal relationship.

An even more rare variant is when the cake kidney is drained by a single ureter (has been previously reported in only four patients) 1.

Cake kidney malformation is not necessarily associated with renal dysfunction but does require exclusion of concomitant anomalies, long-term follow-up for early detection of possible future complications such as obstruction, infection, or calculi.


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Abdominal and pelvic anatomy

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