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KMID : 0386119960350010053
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Journal of the Korean Radiological Society
1996 Volume.35 No. 1 p.53 ~ p.57
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The Oblique Interface in the Right Cardiophrenic Angle: Cest Radiographic-CT Correlation
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김정숙
이경수/주성욱/주인욱
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Abstract
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Purpose :
@EN An oblique interface in the right cardiophrenic angle, extending superomedially from right retrocardiac or supradiaphragmatic region inferolaterally to peridiaphragmatic region, is occasionally observed on posteroanterior chest radiograph.
The
aim
of this study was to evaluate the frequency of visualization of the interface on chest radiographs and to elucidate its nature on radiographic-CT correlation.
@ES Materials and Methods:
@EN Posteroanterior chest radiographs from 300 consecutive subjects were analyzed to evaluate the frequency and demographic data about an oblique interface in the right cardiophrenic angle. Thin-section CT scans(1-mm collimation and 5-mm
intervals)
were
obtained from the subjects with positive interface on chest radiograph for assessment of the nature of the interface. The demographic data in the subjects with and without the interface were tested statistically to note any difference between two
groups.
@ES Results :
@EN Oblique interface in the right cardiophrenic angle was present in 29 subjects(9.7%) on chest radiograph. The age of the subjects with positive interface(13 men and 16 women) ranged from 19 to 70 years(mean±SD, 47±12.7 years) whereas the age
of the
subjects without the interface from 16 to 82 years (mean ± SD, 50±9.1 years)(p>0.1). The body weight of the subjects with the interface ranged from 41 to 72 Kg(mean±SD, 60±8.0Kg) whereas the body weight of the subjects without the interface
from 41
to 85Kg(mean±SD, 63±10.1 Kg) (p>0.1). On CT scan, it was formed due to contact between the epipericardial fat and the right middle lobe of the lung in 27 subjects(93%) and between the inferior vena cava and the medial basal segment of the right
lower
lobe of the lung in two(7%)
@ES Conclusion :
@EN Oblique interface in the right cardiophrenic angle is occasionally visualized on chest radiograph. It is formed due to contact between the right middle lobe of the lung and pericardial fat in most cases. The frequency of visualization of the
interface has no relationship to age and body weight of the subjects.
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KEYWORD
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