PMC3955850_01
B-Mode US scan of the heterogeneous, cystic-solid mass involving the entire left kidney. The size of the lesion in three planes is 60x59x64 mm.
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Ultrasonography revealed an ovoid shaped 60x59x64 mm 3 sized, heterogeneous mass consisting of intermediate echogenicity (Figure 1).
Sonographic posterior acoustic enhancement of the semi-solid cystic mass is clearly seen.
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The central region was composed of an irregular hypoechoic component with posterior acoustic enhancement (Figure 2).
Nodular protrusion of the solid component towards the central region and anechoic-cystic central component is seen. Calcifications are not remarkable in US.
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Faint nodular protrusions from the peripheral solid component into the hypoechoic center were seen (Figure 3).
Helical CT examination of heterogeneous, cystic renal mass within the left retroperitoneal site shows peripheral fatty tissue deposits with low attenuation values.
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CT demonstrated a lobulated, heterogeneous, hypodense mass extending craniocaudally from the splenic hilum to the level of the left iliac fossa (Figure 4).
A, Peripheral coarse calcifications on CT. B, Calcifications are clustered in particular regions of the mass.
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Peripheral hyperdense coarse calcifications and adipose tissue components were well demonstrated by CT, with clusters of calcific foci (Figure 5).