The Thymus

Part of the series Medical Radiology pp 35-55

Diagnostic Imaging of the Normal Thymus

  • E. Willich
  • , E. Walter
  • , W. R. Webb
  • , G. de Geer

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The thymus is by far the most frequent cause of an enlarged mediastinal shadow in newborns and infants. It varies enormously in size and shape (Fig. 5.1) and in general is well differentiated on chest radiographs up to the 2nd year of age or beyond.