Document Detail

Cervical trachea: dynamics in response to herniation of the normal thymus.
MedLine Citation:
PMID:  8421739     Owner:  NLM     Status:  MEDLINE    
Nineteen infants aged 2 months to 2.5 years, first seen predominantly with stridor, were noted to have intermittent soft-tissue mass effect in the upper airway during routine evaluation with fluoroscopic or radiographic methods. The cervicothoracic trachea was always buckled posteriorly and, in almost all instances, to the right during forced exhalation (crying). Real-time ultrasound examination with the neck extended was used in these patients to define the cause of the tracheal dynamics. The intermittent cephalic movement of the homogeneous echotextured thymus from the anterior mediastinum into the neck was determined to be the probable cause of the mass effect in these infants. Magnetic resonance imaging in three infants confirmed this finding. The intermittent, physiologic suprasternal movement of the thymus in these infants did not by itself cause any luminal compromise of the trachea and did not result in any respiratory difficulty in these infants.
G A Mandell; R D Bellah; M E Boulden; N H Sherman; H T Harcke; R J Padman; K W McNicholas
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Radiology     Volume:  186     ISSN:  0033-8419     ISO Abbreviation:  Radiology     Publication Date:  1993 Feb 
Date Detail:
Created Date:  1993-02-18     Completed Date:  1993-02-18     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0401260     Medline TA:  Radiology     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  383-6     Citation Subset:  AIM; IM    
Department of Medical Imaging, Alfred I. duPont Institute, Wilmington, DE 19899.
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MeSH Terms
Child, Preschool
Magnetic Resonance Imaging
Thymus Gland / abnormalities*,  physiopathology,  ultrasonography
Trachea / abnormalities*,  physiopathology,  ultrasonography

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