Imaging Features and Misdiagnosis of Giant Cell Tumor of Bone

Objective: Analyze the imaging appearances of X-ray, CT and MRI in giant cell tumor of bone (GCT) and the causes of misdiagnosis to improve the diagnostic accuracy. Methods: Collect 30 cases of GCT confirmed by operation and pathology and analyze the X-ray, CT and MRI imaging findings retrospectively. Results: 13 cases located in distal femur, 6 in proximal tibia, 4 in proximal femur, 3 in proximal humerus, 2 in distal radius, l in lumbar spine, and 1 in iliac bone. There are 5 cases, about 16.7%, mis-diagnosed before operation. Conclusion: X-ray, CT and MRI reflect the pathological changes of GCT from different aspects. Combining the three methods of imaging can display the GCT imaging features well and conducive to diagnosis and differential diagnosis.