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| Differentiation between Small (≤3 cm) Renal Cell Carcinoma and Angiomyolipoma According to Vascular Distribution |
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| Kun young Lim, M.D. Min Hoan Moon, M.D.*, Hyo Chul Kim, M.D., Seung Hyup Kim, M.D. |
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| Department of Radiology, Seoul National University College of Medicine, Institute of Radiation Medicine, SNUMRC *Department of Radiology, Sungkyunkwan University school of Medicine, Samsung Cheil Hospital |
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| PURPOSE : To evaluate the usefulness of color/power Doppler ultrasonography (US) in differentiation between small
renal cell carcinomas (RCCs) and angiomyolipomas based on the vascular distribution on color/power
Doppler ultrasonography.
MATERIALS and METHODS : Retrospective analysis of color/power Doppler US findings of twenty patients with small
renal tumors less than 3 cm in size and twenty patients with angiomyolipoma was done. The vascular distribution
on color/power Doppler US was classified into: pattern 1=no flow signal, pattern 2=intratumoral focal flow
signal, pattern 3=penetrating flow signal and pattern 4=peripheral flow signal. Statistical analysis was done using
Fisher’s Exact Test, at 99% confidence level.
RESULTS : Among 20 patients with RCCs, 13 patients had pattern 3 or pattern 4 whereas among 20 patients with angiomyolipoma,
17 patients, pattern 1 or 2. There was a statistically significant difference in the vascular distribution
between two groups (p<0.01).
CONCLUSION : Color/power Doppler ultrasonography showed a distinct difference in vascular distributions for renal
cell carcinomas and angiomyolipomas with a statistical significance. Therefore, color/power Doppler US is useful
in differentiating renal cell carcinomas from angiomyolipomas. |
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| Keyword : Kidney Kidney neoplasms, US Ultrasound (US), Doppler studies Kidney neoplasms, diagnosis |
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pdf파일 : 119-123 임근영.pdf 
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> Journal > Journal Search 
Journal of Korean Society of Ultrasound in Medicine 2003 ; 22 (3) : p.119-123
