I had ultrasound done and it said a prominent column of berlin versus a duplicated collecting system is seen in the right kidney. what does that mean?

Column of Bertin: Renal column (of bertin) is extension of renal cortex between the renal pyramids [see diagram]. It allows the cortex to be better anchored. It consists of blood vessels, urinary tubes & fibrous material. See this site for image of duplicated collecting system, a common normal variant: http://health-fts.Blogspot.Com/2012/04/urinary-tract-obstruction.Html (midpage for pic).