CT - CT abdomen, multi-phase
A solid mass is associated with posteromedial aspect of the upper pole left kidney. The mass has smooth margins and is capsular or cortically-based. No associated perinephric stranding. The dynamic characteristics are as follows:
- Non-contrast: homogenous, slightly hyperdense to renal parenchyma (40 HU)
- Late arterial phase: homogenous low level enhancement (~10 HU), hypoenhancing relative to kidney
- Late portal phase: homogenous low level enhancement (~25 HU), again hypoenhancing relative to kidney