坏死性嗜铬细胞瘤的“环形征”
The "ring sign" of necrotic pheochromocytoma.
作者信息
Velasquez G, Nath P H, Zollikofer C, Valdez-Davila O, Castaneda-Zuniga W R, Formanek A, Amplatz K
出版信息
Radiology. 1979 Apr;131(1):69-71. doi: 10.1148/131.1.69.
DOI:10.1148/131.1.69
PMID:424608
Abstract
Pheochromocytomas are usually hypervascular tumors exhibiting dense stain during angiography. The cystic nature of the neoplasm or tumor necrosis can result in failure of opacification of the mass or a central lucent area. Four cases of pheochromocytoma are described where a central avascular zone was surrounded by a dense rim of contrast, giving a "ring sign." Since this appearance is best seen in the capillary and venous phases, delayed films are essential.
摘要
嗜铬细胞瘤通常是血管丰富的肿瘤，在血管造影时表现为浓密染色。肿瘤的囊性本质或肿瘤坏死可导致肿块不显影或中央透亮区。本文描述了4例嗜铬细胞瘤，其中央无血管区被浓密的对比剂边缘环绕，呈现“环形征”。由于这种表现在毛细血管期和静脉期最易观察到，因此延时片至关重要。
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The "ring sign" of necrotic pheochromocytoma.坏死性嗜铬细胞瘤的“环形征”
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