Figure 17.

(a) Secondary pulmonary lymphoma. A multidetector CT scan in a 26-year-old male demonstrates a large anterior mediastinal soft tissue mass (arrow) displacing the mediastinal structures posteriorly and abutting the pleura on the left. There is a small left pleural effusion (arrowhead). (b) Integrated fluorodeoxyglucose (FDG) positron emission tomography CT scan in the same patient demonstrates parenchymal extension (arrow) from the large anterior mediastinal mass which demonstrates markedly increased FDG uptake.