<prompt> Most common congenital anomaly of kidneyEctopic kidneyRenal duplicationHorse shoe kidneyRenal agenesis  <response>: Congenital anomalies of kidney and urinary tract is phenotypically variable and can affect the kidneys alone andor the lower urinary tract. The spectrum includes more common anomalies such as vesicoureteral reflux and, rarely, more severe malformations such as bilateral renal agenesis. ref - researchgate.net 