Infundibulopelvic stenosis--evaluation of diagnostic imaging.

Infundibulopelvic stenosis is a very rare kidney disease. This congenital disorder must be differentiated from multicystic dysplastic kidney, polycystic kidney disease, simple renal cysts and mega-(poly)-calicosis. Associated abnormalities of the ureter are rare. Ureteric obstruction was associated in our two patients, and in one case agenesis of the bladder and a duplicated genital tract were also present.