Fig. 1

a Chest radiograph showing a mass-like lesion (white arrow) near the left hilum. b Coronal section of a contrast-enhanced chest computed tomography showing a 7-cm heterogeneous mass (white arrow) on the left side of the vertebra (T4-6 level). c and d Magnetic resonance imaging revealed that the paravertebral mass (white arrow) had intermediate signal intensity on the T1-weighted axial image (c) and high signal intensity on the T2-weighted image (d). e An ¹²³I-metaiodobenzylguanidine scanning showing focally high tracer uptake in the left paravertebral area (black arrow)