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Comparison between pulmonary embolism and perihilar lymph node. a Contrast-enhanced CT of the chest shows curvilinear filling defect in the left lower lobe pulmonary artery. b Fusion of PET with CT shows low-level hypermetabolism associated with the pulmonary artery embolism. c Contrast-enhanced CT of the chest shows an enlarged right hilar lymph node. d Fusion of PET with CT shows hypermetabolism associated with the right hilar lymph node, compatible with hilar lymphadenopathy
