Definition: The innermost area of the kidney. It is separated into 8 to 18 cone-shaped sections called the medullary pyramids. If the biopsy needle goes in too far, you may only get medulla and the biopsy will likely have to be repeated.
Renal Medulla
From About.com
Updated: April 3, 2007
About.com Health's Disease and Condition content is reviewed by Kate Grossman, MD
Suggested Links
Explore Kidney Diseases
Must Reads
More from About.com
Work Hard, Travel Easy
The best tips for business travelers.Dog Care
Get tips on training and caring for dogs of all ages.48 Hours in Vegas
Plan a hot weekend in Sin City.Hotel Advice
The must-stay hotels worldwide.
Also from About.com:
©2008 About.com, a part of The New York Times Company.
All rights reserved.