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. 2019 May 13;8(5):2058460119849706. doi: 10.1177/2058460119849706

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© The Foundation Acta Radiologica 2019

Creative Commons Non Commercial CC BY-NC: This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Fig. 2. — A 38-year-old man with clear cell RCC. (a) Unenhanced image; (b) contrast-enhanced image. On axial unenhanced CT, a 3.5-cm homogeneous low-density mass measuring 20 HU with a clear margin is detected in the right kidney (Rt. Kidney, arrow). The mass projects outside the renal cortex. It is easily detected, but apparently looks like a complicated cyst. On axial contrast-enhanced CT, the mass is heterogeneously enhanced. Therefore, this mass is suggested to be malignant tumor, such as RCC.