PMC9619337_01
A coronal non-enhanced CT image shows a hyperdense blood density lesion occupying the right lower renal calyx and extending to the renal pelvis.
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It showed a hyperdense blood density lesion occupying the right lower renal calyx and extending to the renal pelvis:Fig. 1.
Axial contrast-enhanced CT image shows no enhancement of the lesion.
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In addition, no enhancement of the lesion was seen in Fig. 2.
A coronal T2 MRI showed an interval decrease in the lesion size.
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AGL depending on the findings of the CT scan. A follow-up magnetic resonance image (MRI) was ordered 2 weeks after the CT, showing an interval decrease in size, Fig. 3, without enhancement of the lesion (Fig. 4).