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Radiology, Vol 127, 621-625, Copyright © 1978 by Radiological Society of North America

ARTICLES

Linear shadows in the air-contrast barium enema

CS Ho and E Rubin

In 3 patients with carcinoma of the colon, lesions were seen as linear shadows on air-contrast barium enema studies. When the elevation of a lesion is slight or the tumor--mucosal interface is gently sloping, the tumor's proximal and distal edges may be ill-defined or disappear altogether. Thus only a linear shadow representing the interface between the tumor surface and air in the lumen appears. Other causes of these lines are also discussed.




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Copyright © 1978 by the Radiological Society of North America.