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chRCC in a 57-year-old man who presented to the emergency department for evaluation of sudden-onset urinary retention and intermittent hematuria. (a–c) Axial noncontrast (a) and axial (b) and coronal (c) contrast-enhanced CT images show a renal mass (*) with internal calcifications (arrow in a) and heterogeneous enhancement. (d) Axial contrast-enhanced CT image from below the level of the kidneys shows an enlarged retroperitoneal lymph node (*), compatible with metastatic disease.
