Multimodal imaging in the diagnosis of bone giant cell tumors: A retrospective study

Figure 1 Computed tomography and magnetic resonance imaging findings of giant cell tumor of bone. A and B: Flaky osteolytic bone destruction in the left femoral head, thinning of the bone cortex, no obvious signs of shell rupture were observed on computed tomography (CT); C and D: There was T1 Long with a T2 signal shadow in the left femoral head; a liquid-liquid level was visible on T2WI, and no obvious abnormalities were observed in the surrounding soft tissue of the lesion on magnetic resonance imaging; E and F: Swelling bone destruction of the L2 vertebral body with residual bone ridges was visible inside; G and H: Recurrence occurred 2 years after surgery (E and F), and multiple lung metastases were observed via CT.

Figure 2 Left upper tibia giant cell tumor of bone invading the upper fibula with multiple lung metastases on positron emission tomography - computed tomography. A and B: Abnormal concentrations of contrast agents in both lungs and the upper tibia; C and D: Large area of bone destruction in the upper segment of the left tibia, accompanied by the formation of a large soft tissue mass and invasion of the upper end of the fibula with bone destruction; E and F: Abnormal concentration and high-density nodules in the lower lobes of both lungs.