target sign

A cross sectional appearance of the large intestine—enhanced mucosa and serosa and lucent central submucosa—caused by oedema or inflammation of bowel wall

target sign

GI imaging A smoothly-contoured radiopacity with both central and peripheral radiolucency, which may be seen in pedunculated colonic polyps, when viewed.en face by double contrast–air-contrast barium studies; an 'eccentric' target sign is seen in GI diverticuli where a small amount of radiocontrast enters the pouch and is surrounded by the radiopaque body of a diverticulum Lung imaging A circumscribed pulmonary aspergilloma or focus of necrotizing bronchopneumonia seen in a plain CXR. Cf Coin lesion.

单词	target sign
释义	target sign A cross sectional appearance of the large intestine—enhanced mucosa and serosa and lucent central submucosa—caused by oedema or inflammation of bowel wall target sign GI imaging A smoothly-contoured radiopacity with both central and peripheral radiolucency, which may be seen in pedunculated colonic polyps, when viewed.en face by double contrast–air-contrast barium studies; an 'eccentric' target sign is seen in GI diverticuli where a small amount of radiocontrast enters the pouch and is surrounded by the radiopaque body of a diverticulum Lung imaging A circumscribed pulmonary aspergilloma or focus of necrotizing bronchopneumonia seen in a plain CXR. Cf Coin lesion.
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