Document Detail

Intersegmental (intersublobar) septum of the lower lobe in relation to the pulmonary ligament: anatomic, histologic, and CT correlations.
MedLine Citation:
PMID:  1410343     Owner:  NLM     Status:  MEDLINE    
A thin horizontal linear area of hyperattenuation that extends laterally from the mediastinal surface of the lung within the area between the inferior pulmonary vein and the diaphragm is a common observation on computed tomographic (CT) scans of the chest. To determine the anatomic basis for this structure, the authors examined four normal human lungs (two right and two left lungs) fixed in an inflated state at pathologic and histologic examination and at CT. The structure in question was identified in one right and two left lungs. The linear area of hyperattenuation seen at CT is a septum of thin, loose intraparenchymal connective tissue that is bounded medially by the base of the pulmonary ligament, where the two sleeves of the visceral pleura appose one another, and laterally by a vertically oriented vein. The septum was identified in 39 of 50 (78%) normal chest CT scans. The pulmonary ligament often appeared to look like a beak at the mediastinal side of the lung. The septum, when visible (n = 39), was bounded medially by the beak in 28 CT scans (72%) and laterally by a vein in 24 scans (62%).
Y M Berkmen; S R Drossman; C C Marboe
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Radiology     Volume:  185     ISSN:  0033-8419     ISO Abbreviation:  Radiology     Publication Date:  1992 Nov 
Date Detail:
Created Date:  1992-11-13     Completed Date:  1992-11-13     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0401260     Medline TA:  Radiology     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  389-93     Citation Subset:  AIM; IM    
Department of Radiology, Columbia-Presbyterian Medical Center, New York, NY 10032-3784.
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MeSH Terms
Connective Tissue / anatomy & histology,  radiography
Diaphragm / anatomy & histology,  radiography
Ligaments / anatomy & histology,  radiography
Lung / anatomy & histology*,  blood supply,  radiography*
Lymphatic System / anatomy & histology
Pulmonary Veins / anatomy & histology,  radiography
Tomography, X-Ray Computed*
Venules / anatomy & histology

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