PMC3665658_01
The lower pole of left kidney shows a non cystic, cortical heterogeneity (white arrow). The vascular pattern suggests a poor blood support. A cortical cyst is seen in the middle region.
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No parenchymal echogenicity abnormalities were seen in the right kidney; however, its lower pole showed mild parenchymal heterogeneities and a poor vascular pattern (Fig. 1).
Axial contrast-enhanced image in the parenchymal phase shows an anterior, hypodense area in the right kidney, strongly suggestive of renal infarction (asterisk). The posterior region of the left kidney is heterogeneously hypodense, with fine enhancing lines (arrowhead), consistent with the Doppler-US findings showing persistence of poor vascular flow in this area.
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Parenchymal phase showed an anterior, hypovascular area in the right kidney, with geographical limits, and the heterogeneous enhancement of the posterior region of the left kidney (Fig. 2).