- A tumor arising from renal tissue.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Examples from the Web for nephroma
Peltigera furnishes seven species for Ohio, while only one species of Nephroma has thus far been found in the State.
Nephroma with cortex on both sides, is to be regarded higher than Peltigera, which has the cortex on the upper side only.
A section through the thallus of Nephroma helvetica, showing the cortices, upper and lower, and the mycelial medulla within.