Figure 1.

Pre-operative positron emission tomography showing a large retroperitoneal mass with a centrally located metabolic activity of 2.4 cm in diameter (a). Computed tomography (CT) with the large retroperitoneal mass and involvement of the renal vessels (b). A kidney tumour was detectable neither in the right nor in the left hydronephrotic kidney (c).

Zeh et al. BMC Urology 2013 13:9   doi:10.1186/1471-2490-13-9
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