Figure 4.

Radiograph, ultrasonography and CT scan of the abdomen showed a large, complex, soft-tissue mass with bony elements. A. Plain film of the abdomen. Calcified mass at the left border of thoracolumbar vertebrae T12, T11, L1 and L2. B. Postnatal ultrasonography of abdomen. The figure shows a retroperitoneal mass in the left upper abdomen. The mass is cystic, with a centrally located fetus. C. Axial CT scan at the L1 level. In front of the left kidney, there is a well-defined mass with 1 cystic formation. There are long and hyperdense opacities corresponding to fetal vertebral column. D. Sagittal CT scan. In front of the left kidney, there is a mass containing fluid and some calcified opacities that corresponding to fetal limbs.