rocker bottom shadow
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
rocker bottom shadowImaging A horizontal, broad, curved soft tissue radiodensity that partially overlies the heart, extends into the hilum, corresponding to the thymus, seen in a plain AP CXR in neonatal pneumomediastinum, and derives its name from old wooden cradles. See Spinnaker sail sign.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.