X-ray
Frontal
Lateral
A large (roughly 9 x 9 x 14 cm) anterior mediastinal soft density mass is noted without internal calcification. The lungs, heart and superior mediastinum appear unremarkable. No osseous lesion identified.
Conclusion:
Large anterior mediastinal mass may represent lymphoma (most likely) or a thymic tumour, metastatic nodal mass, vascular anomaly etc...
This needs prompt further assessment with contrast enhanced CT scan.