Renal column
Columna renalis
Also known as: column of Bertin, columns of Bertin
An inward extension of cortical tissue between adjacent renal pyramids that carries the interlobar arteries and veins toward the cortex.
Overview
Renal columns are cortex, not medulla: they contain renal corpuscles and convoluted tubules like the rest of the cortex, and they separate neighbouring pyramids. Each column transmits the interlobar arteries and veins, which run from the renal sinus toward the bases of the pyramids before turning into the arcuate vessels.
A prominent (hypertrophied) column of Bertin is a common normal variant that can bulge into the sinus and mimic a renal mass on ultrasound; it has the same echotexture and enhancement as cortex.
- Location
Between adjacent renal pyramids, extending from the cortex to the renal sinus.
Anatomy
- Arterial supply
Interlobar arteries running within the columns.
Function
- Conduit for interlobar vessels
- Additional cortical (filtering) tissue
Clinical significance
Pseudotumour
A hypertrophied column of Bertin is the classic renal "pseudotumour"; contrast CT or Doppler shows normal cortical enhancement and vessels.
Compiled from standard anatomy and physiology references — see the Urinary System sources. For education only; not medical advice.