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논문 기본 정보

자료유형
학술저널
저자정보
허진도 (고신대학 의학부 방사선과학교실)
저널정보
대한영상의학회 대한방사선의학회지 대한방사선의학회지 제22권 제6호
발행연도
1986.1
수록면
991 - 998 (8page)

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The lateral margin of the psoas muscle, contrasted by retroperitoneal fat, is usually visualized on plain abdominal radiography. Failure to visualize all or segment of lateral margin of the psoas muscle, so called psoas sign, has been emphasized as reliable finding of retroperitoneal pathology. But the significance of psoas sign has been controversial. The authors reevalueated 'psoas sign' by comparing 160 abdominal radiographs with CT. The results were as follows : 1. In 160 supine radiographs, good visualizaton was present in 106 cases(66.3%), faint visualizaton in 24 (15.05), segmental nonvisualization in 18 (11,3%), and complete nonvisualization in 12(7.5%). In 113 erect radiographs, good visulaization was present in only 36 cases (31.95). 2. Asymmetric visualization was present in 84 out of 160 cases. In patients with scoliosis, lateral margin of convex side was seen more clearly than co cave side, and this findings was statistically significant (P<0.005). 3. Ascites did not directly influence to psoa visualization , contrary to common belief. 4. In 54 cases of faint or nonvisualization , normal was 16 (29.6%), and retroperitoneal pathology was 22(40.7%). 1) In normal patient, psoas contact with kidney or intestine and deformed psoas muscle were responsible for poor visualizaton. 2) The major cause of poor visualization in intraperitoneal pathology were psoas contact with displaced kidney by hepatomegaly. ascites with scant retroperitoneal fat and deformed psoas muscle. 3) The major cause of poor visualizationin retroperitoneal pathology were psoas invasion by tumor or inflammation, psoas contact with enlarged kidney or perirenal lesion. 5. In summary, the mechanism of faint or nonvisualization of psoas margin were. 1) psoas contact with normal or pathologic organs 2) psoas invasion by tumor or inflammation 3)deformed psoas muscle 4) scanty retroperitonela fat

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