Name some complications of crossed fused ectopia?
Nephrolithiasis, infection and hydronephrosis.
Which is more common, left-to-right, or right-to-left ectopia?
Left-to-right, as in this case, is 3 times more common.
The CT shows an absent left kidney, and an enlarged right kidney. The left kidney has crossed the midline and fused with the lower pole of the right kidney. Bowel loops occupy the absent renal fossa on the left side.