Fairly well defined heterogeneously enhancing lesion noted in the anterior mediastinum extending into the middle mediastinum. This is seen to abut cardia, left pulmonary artery, adjacent pulmonary veins and anterior chest wall. This is also seen to cause the collapse of the underlying lung. The lesion is seen to compress the left main pulmonary artery and left main bronchus.
Parenchymal opacities with air bronchogram noted in right middle and lower lobes and left lower lobe - suggestive of consolidation.
Impression: Lymphoma vs thymoma.
PET revealed metabolically active disease in anterior mediastinum on left side compressing adjacent lung parenchyma; multiple hypermetabolic mediastinal, right hilar, bilateral supraclavicular, right axillary, left cardiophrenic, gastrohepatic and abdominal lymph nodes.