Crossed renal ectopia is a rare congenital malformation in which one kidney is located on the side opposite from which its ureter inserts into the bladder. The majority of crossed… Click to show full abstract
Crossed renal ectopia is a rare congenital malformation in which one kidney is located on the side opposite from which its ureter inserts into the bladder. The majority of crossed ectopic kidneys are fused to the ipsilateral kidney. The L-shaped kidney is one of the six forms of crossed renal ectopia with fusion; these include unilateral fused kidney (inferior ectopia), S-shaped kidney, lump kidney, L-shaped kidney, disc kidney, and unilateral fused kidney (superior ectopia).
               
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