Xavier Delforge, Anthony Kallas-Chemaly and Henri Steyaert
A 2 years old boy was admitted in our institution for abdominal mass. He presented a growing abdominal mass, associated with constipation, and recently complained of pain with walking. The computed tomography-scan showed a large mass of the retroperitoneum, compressing the right ureter with upper urinary tract dilation. The alphafoetoprotein (AFP) blood level was 7500 ng/mL.