Document Detail

Normal thymus in infancy: sonographic characteristics.
MedLine Citation:
PMID:  2643142     Owner:  NLM     Status:  MEDLINE    
A prospective sonographic study of the normal thymus in 56 infants was performed to determine the shape, extent, and echogenicity of normal thymic tissue. The thymus had either a triangular or teardrop shape on longitudinal scans and a trapezoidal or bilobate shape on transverse scans. Typically, the thymus was located anterior to the great vessels and extended down to the upper portion of the heart (in one infant, to the diaphragm). It extended up into the lower cervical area in five infants. The great vessels--including the superior vena cava, aorta, and the pulmonary artery--were well imaged through the thymus. In six infants the thymus encircled the left innominate vein. The echogenicity of the thymus was homogeneous, similar to that of the liver and spleen. The intensity of thymic echogenicity was less than that of the liver, spleen, and thyroid gland. This study demonstrates that the thymus has a characteristic sonographic appearance and can be easily identified.
B K Han; D S Babcock; A E Oestreich
Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Radiology     Volume:  170     ISSN:  0033-8419     ISO Abbreviation:  Radiology     Publication Date:  1989 Feb 
Date Detail:
Created Date:  1989-02-15     Completed Date:  1989-02-15     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0401260     Medline TA:  Radiology     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  471-4     Citation Subset:  AIM; IM    
Department of Radiology, Rush-Presbyterian-St Luke's Medical Center, Chicago, IL 60612.
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MeSH Terms
Child, Preschool
Infant, Newborn
Reference Values
Thymus Gland / anatomy & histology*

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