Congenital mesoblastic nephroma

Study carried out at Hospital Israelita Albert Einstein – HIAE, Sao Paulo (SP), Brazil. 1 MD of Hospital Israelita Albert Einstein – HIAE, Sao Paulo (SP), Brazil. 2 PhD; Radiologist of Hospital Israelita Albert Einstein – HIAE, Sao Paulo (SP), Brazil. 3 MD of Hospital Israelita Albert Einstein – HIAE, Sao Paulo (SP), Brazil. 4 MD of Hospital Israelita Albert Einstein – HIAE, Sao Paulo (SP), Brazil. 5 MD of Hospital Israelita Albert Einstein – HIAE, Sao Paulo (SP), Brazil. 6 MD of Hospital Israelita Albert Einstein – HIAE, Sao Paulo (SP), Brazil. 7 Radiologist; Head of the Imaging Department at Hospital Israelita Albert Einstein – HIAE, Sao Paulo (SP), Brazil. Corresponding author: Ronaldo Hueb Baroni – Alameda Jau 731 – apto. 172 – Cerqueira Cesar – CEP 01420-001 – Sao Paulo (SP), Brasil – Tel.: 11 3251-1006 – e-mail: rbaroni@einstein.br Received on: May 4, 2009 – Accepted on: Oct 13, 2009 Figure 1. Right kidney – longitudinal ultrasound. A heterogeneous renal mass on the right, poorly outlined, occupying the middle and lower thirds, measuring about 3.8 x 3.4 cm, with thick perirenal fluid collection compatible with subcapsular hematoma Figure 2. Right kidney Doppler image – slight increase in vascular formation inside the renal mass