as the kidneys of the fetus arise from the pelvic area they abnormally fuse together at the lower end or base. By fusing, they form a "U" shape, which gives it the name "horseshoe."
A rare condition where the kidneys fuse together at the lower end and form a "U" shape.
Horseshoe kidney is a congenital disorder, affecting about 1 in 500 to 1 in 600 people, in which a person's two kidneys fuse together to form a horseshoe-shape. This is the most common type of fusion anomaly in the kidneys.