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Fig. 5. —24-year-old woman with newly diagnosed lymphadenopathy in
thorax. FDG positron emission tomography image shows multiple areas of
increased uptake in mediastinal and hilar lymph nodes (arrows).
Surgical biopsy showed sarcoidosis. Diffuse FDG uptake in enlarged thoracic
lymph nodes suggests lymphoma. Presence of lymphadenopathy combined with
parenchymal abnormalities in bilateral upper lobe distribution suggests
sarcoidosis.
