Medullary Thyroid Carcinoma: An Update on Imaging
Figure 10
Imaging of bone metastases in medullary thyroid carcinoma on two different patients. Patient A (a-b). 99m-Tc-MDP bone scan (a) and whole-body contrast-enhanced magnetic resonance imaging (MRI), T1 weighted images (DCE) (b). MRI demonstrates improved visualization of metastatic lesions involving the left iliac bone (blue arrow) and clear visualization tiny bone metastases in the spine (red arrows). Patient B (c-f). Visualization of small bone metastases. Axial contrast-enhanced computed tomography (CT) at the level of L1 shows single lytic metastases in the right aspect of the vertebral body (orange arrow) (c). Axial contrast-enhanced MRI, T1 weighted images (DCE) (d), axial MRI diffusion-weighted sequence (e), and axial MRI, T2 weighted images (f) can detect additional small spinal metastases, which are not visualized on CT (green arrows).