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Click Two year old boy with mesenchymal hamartoma of the liver. Low dose CT, performed with a GE Light Speed Plus (4 slice-CT). Precontrast axial images demonstrate a large abdominal mass abutting the right lobe of the liver and contacting the anterior and lateral abdominal walls. It extends through the lower quadrants of the abdomen. The mass is of mixed density, with multiple central areas of water density and a peripheral area of soft tissue density.

Click Two year old boy with mesenchymal hamartoma of the liver. Low dose CT, performed with a GE Light Speed Plus (4 slice-CT). Injection of 28ml (2ml/Kg) of 300mg/ml iodine concentration non-ionic contrast agent. Contrast-enhanced axial images demonstrate a large abdominal mass with multiple non-enhancing areas corresponding to the cystic components of the lesion and peripheral hyperenhancing areas, corresponding to the solid components. The lower part of the lesion has a multicystic appearance with hyperenhancing septa.

Click Two year old boy with mesenchymal hamartoma of the liver. Contrast enhanced low dose CT, performed with a GE Light Speed Plus (4 slice-CT). Injection of 28ml (2ml/Kg) of 300mg/ml iodine concentration non-ionic contrast agent. Coronal reconstruction demonstrates a large intra-peritoneal mass with 16x9x15cm abutting the right lobe of the liver and displacing the bowel loops to the periphery. The limits of the lesion are smooth and slightly lobulated. The mass is heterogeneous, containing central areas of water density with no contrast-enhancement, and multiple hyperenhancing septa.

Click Two year old boy with mesenchymal hamartoma of the liver. Contrast enhanced low dose CT, performed with a GE Light Speed Plus (4 slice-CT). Injection of 28ml (2ml/Kg) of 300mg/ml iodine concentration non-ionic contrast agent. Sagittal reconstruction demonstrates a large intra-peritoneal, heterogeneous mass with 16x9x15cm, containing multiple areas of water density with no contrast-enhancement, corresponding to the cystic components of the lesion and multiple hyperenhancing septa.