Granulocyte colony-stimulating factor-producing hepatocellular carcinoma with abrupt changes

Figure 1 Imaging and macroscopic findings of granulocyte colony-stimulating factor producing hepatocellular carcinoma. A: CT scan one month before operation showed an irregular liver mass located in segment IV, approximately 60 mm in diameter with peripheral enhancement (white arrow head); B: T2-WI MRI one week before operation showed the rapidly growing liver mass with a 100 mm diameter (white arrow head); C: Macroscopic examination showed a large tumor (100 mm × 100 mm) that protruded through segment IV of the liver to the greater omentum; D: The irregular liver tumor in segment IV showed a central necrosis.