Fig. 7

A 78-year-old man presents with chest pain, fever and S. aureus septicemia. (a) An axial non-contrast CT thorax image demonstrates high attenuation in the descending thoracic aorta wall (*), with adjacent consolidation in the left lower lobe (arrow). (b) An 18 F-FDG PET/CT image shows corresponding increased FDG uptake in the aortic wall (*). The patient was diagnosed with an infected intramural haematoma, and was treated with antibiotics. (c) A follow-up sagittal fat-saturated T1 MRI post-GBCA image shows development of a large saccular pseudoaneurysm (curved arrow), with persistent adjacent inflammatory tissue (*). The patient subsequently underwent surgical repair. Ao = descending thoracic aorta