Urología oncológica (Renal)

Question 1

Características imagenológicas de un oncocitoma renal:

Answer 1

Tend to be large well-demarcated tumors at presentation.

Post-contrast:
- small tumors may enhance homogeneously, but usually enhancement is heterogeneous and the mass is larger

• central stellate non-enhancing scar is seen in approximately a third of cases
• renal vein thrombosis may be present, but tumor thrombus is absent
  segmental enhancement inversion
• two distinct regions of differing segmental enhancement in the corticomedullary phase, with the enhancement pattern inverting during the nephrogenic phase
• more common in tumors <3 cm