CT
- CT chest, abdomen and pelvis
Coronal Mixed arterial/venous phase
Axial Mixed arterial/venous phase
Sagittal Mixed arterial/venous phase
Differentials:
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Mesoblastic nephroma, rhabdoid tumour, Wilms tumour
What is the most common renal tumour of infancy?
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Mesoblastic nephroma
CT demonstrates a large, expansile retroperitoneal mass occupying a large portion of the right hemi-abdomen, demonstrating a claw sign with the renal parenchymal confirming renal origin.
The lesion is predominantly hypodense with interspersed hyperdense areas within . At its infero-medial aspect, the lesion appears to extend into the renal pelvis. The inferior pole of the right kidney demonstrates a mild degree of hydronephrosis although the parenchyma itself has a normal appearance.
Small volume, presumably reactive hypodense fluid is noted in the right paracolic gutter.
Subcentimeter pre and paraaortic lymph nodes of equivocal significance.
