<prompt> Most common anomaly of upper urogenital tract is -Uretero pelvic junction stenosisEctopic uretheral openingUreteroceleEctopic ureter  <response>: Ans. is a i.e., Uretero pelvic junction stenosis o UPJ stenosis is most common abnormality in childhood and is more frequent in male children, characterised by narrowing usually on left side.o Overall, position shape of kidney being most common one.o Horse shoe kidney is the most common and most frequently found renal abnormality among men. 