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Table 2 Imaging features of primary sarcoma of the great vessels

From: Imaging features of primary Sarcomas of the great vessels in CT, MRI and PET/CT: a single-center experience

Basic imaging features
Pulmonary artery sarcoma Aortic sarcoma
Large unilateral obstruction of the main pulmonary arteries Pedunculated or lobulated appearance
  Unusual location
Vascular distension  
  Expansion beyond the vessel wall
Expansion beyond the vessel wall  
Lack of improvement of a ‘pulmonary embolism’ despite adequate anticoagulation  
No evidence of a deep-venous thrombosis  
Imaging findings during detailed work-up  
High metabolic activity as demonstrated by F-18 FDG PET or PET/CT  
Lesion vascularization (as demonstrated by contrast-enhanced dynamic or perfusion MRI or CT)  
Distant metastases