|  | 
Medical Definition of Columnae renales
1. The prolongations of cortical substance separating the pyramids of the kidney. Synonym: columnae renales, Bertin's columns. (05 Mar 2000)
|  | 
1. The prolongations of cortical substance separating the pyramids of the kidney. Synonym: columnae renales, Bertin's columns. (05 Mar 2000)