Effect of Lung Volume and Gravity on the Attenuation and Size of a Pure Ground-Glass Nodule

被引：7

作者：

Ferretti, Gilbert R. ^{[1
,4
,6
]}

Arbib, Francois ^{[3
]}

Roux, Jean Francois

Bland, Vincent ^{[5
]}

Lantuejoul, Sylvie ^{[2
,4
,6
]}

机构：

[1] CHU Grenoble, Clin Univ Radiol & Imagerie Med, F-38043 Grenoble, France

[2] CHU Grenoble, Dept Pathol, F-38043 Grenoble, France

[3] CHU Grenoble, Clin Univ Pneumol, F-38043 Grenoble, France

[4] Univ Grenoble 1, Dept Pathol, Grenoble, France

[5] Cabinet Med Anat Cytol Pathol, Grenoble, France

[6] Inst A Bonniot, Dept Pathol, La Tronche, France

来源：

JOURNAL OF THORACIC IMAGING | 2012年 / 27卷 / 01期

关键词：

lung cancer; in situ adenocarcinoma; ground-glass opacity; ground-glass nodule; gravity-dependent gradient; computed tomographic scan prone position; COMPUTED-TOMOGRAPHY; CT FINDINGS; ADENOCARCINOMAS; GROWTH;

D O I：

10.1097/RTI.0b013e31820c7929

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Detecting potentially malignant changes in a pure ground-glass nodule (GGN) is challenging. The development of a solid component is a known sign, which may help in differentiating benign from malignant GGN. We report the case of a 58-year-old man presenting with a pure GGN in the posterior segment of the right lower lobe. Follow-up computed tomographic scan after 1 year showed marked increase in attenuation (from - 319HU to + 27HU), whereas the average size of the nodule decreased (from 7 to 4.7 mm). On a computed tomographic scan in the prone position the nodule seemed larger (7.8mm) and appeared as a pure GGN (-406HU). Such changes were attributed to the reduction of lung volume and gravity.

引用

页码：W15 / W17

页数：3

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