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논문 기본 정보

자료유형
학술저널
저자정보
김승협 (서울대학교의과대학 진단방사선과학교실)
저널정보
대한영상의학회 대한방사선의학회지 대한방사선의학회지 제32권 제2호
발행연도
1995.1
수록면
307 - 313 (7page)

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Purpose: To evaluated imaging characteristics of metastatic renal tumors in CT and US. Materials and methods:Renal metastases were diagnosed in 25 patients by surgery (n=2), US-guided biopsy (n=15), or follow-up CT (n=8).The primary tumors metastasized to kidney were lung cancer (n=11), adenoid cystic carcinoma (n=3), stomach cancer(n=2), and choriocarcinoma (n=2). Twelve cases invloved one kidney and 13 invloved both kidneys. CT was performedin all 25 patients while US was done in 14. We analysed CT findings in respect to number, size, shape, exophyticdegree, margin, and degree and homogeneity of the contrast enahncement of the lesion ; US findings in regand toechogenicity and homogeneity of the lesion. Results: The average number of the lesions per patient seen on CT wasthree; average diameter of the lesion was 3.6 cm; and 75% (57/76) of all tumors had exophytic degree of 0%. Thecharacteristic CT findings of metastatic renal tumors were round shape (52/76), ill-defined margin (54/76), andpoor (76/76) and inhomogeneous (45/76) contrast enhancement. The echogenicity of the tumors were homogeneous(11/18) and isoechoic (10/18) on US. Conclusion: Metastatic renal tumors had a tendency of multiple, small,ill-marginated, and less-exophytic nature on CT, and homogeneous, isoechoic appearance on US. The familiarity withthe constellation of CT and US findings of renal metastasis described may be helpful in making a correctdiagnosis.

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