What question did this study set out to answer?

To evaluate contrast-enhanced abdominal computed tomography scans for collateral vessel signs indicative of obstruction in the superior vena cava, brachiocephalic vein, or subclavian vein.

December 1, 1996American Journal of Roentgenology

Abdominal CT findings when the superior vena cava, brachiocephalic vein, or subclavian vein is obstructed.

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To evaluate contrast-enhanced abdominal computed tomography scans for collateral vessel signs indicative of obstruction in the superior vena cava, brachiocephalic vein, or subclavian vein.
Retrospectively reviewed upper abdominal CT images in 22 patients with confirmed superior vena cava, brachiocephalic vein, or subclavian vein obstruction.
Prospectively evaluated abdominal CT scans in 200 control patients without known mediastinal pathology or upper extremity venous occlusion.
Identified abdominal collateral networks included the azygos or hemiazygos veins, internal mammary veins, lateral thoracic and superficial thoracoabdominal veins, and vertebral venous plexus.
In the prospective control series (N=200), only 2 patients (1%) exhibited dense undiluted collateral enhancement, which was attributed to an ipsilateral pacemaker or anterior neck phlegmon.
Two additional prospective control patients (1%) displayed mild-to-moderate collateral enhancement associated with surgical abdominal wall hyperemia or axillary lymphadenopathy.

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Implication

Observational study reveals dense collateral vessel enhancement on abdominal CT scans in central venous obstruction, indicating a useful marker for unsuspected thoracic vascular occlusions.

Cite This Study

Bashist et al. (1996) studied this question.

synapsesocial.com/papers/6a7d4ec2c9ada5f6b9d5a65b https://doi.org/10.2214/ajr.167.6.8956577

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Implication

Observational study reveals dense collateral vessel enhancement on abdominal CT scans in central venous obstruction, indicating a useful marker for unsuspected thoracic vascular occlusions.

Abdominal CT findings when the superior vena cava, brachiocephalic vein, or subclavian vein is obstructed.

Key Points

Discussion

Implication

Cite This Study

Abdominal CT findings when the superior vena cava, brachiocephalic vein, or subclavian vein is obstructed.

Key Points

Discussion

Implication

Cite This Study

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