Ho C S, Rubin E
Radiology. 1978 Jun;127(3):621-5. doi: 10.1148/127.3.621.
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.
在3例结肠癌患者中，气钡双重造影研究显示病变为线性阴影。当病变隆起轻微或肿瘤-黏膜界面呈缓坡状时，肿瘤的近端和远端边缘可能不清楚或完全消失。因此，仅出现一条代表肿瘤表面与管腔内空气之间界面的线性阴影。还讨论了这些线条的其他成因。
