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Paediatrics See Spinnaker sail sign
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
sail signImaging A sharply demarcated triangular radiopacity seen in the mediastinum of 10% of normal children, which corresponds to the thymus and disappears on inspiration. See Rocker-bottom shadow.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.