case_images: PMC11798534_01
case_images: A) Posteroanterior (left) and lateral (right) chest X-ray upon admission showed retrohilar opacity erasing the aortic contour (arrow); B) CT scan of the chest (mediastinal window) demonstrates a posterior descending aortic aneurysm with contained rupture (solid arrow) and 'draped aorta' sign (dashed arrow). Peripheral thrombotic-necrotic material (without enhancement) is noted within the aneurysm sac; C) PET-CT image of the chest showing an hypermetabolic focus around the aortic aneurysm is observed (arrow). D) CT scan of the chest (mediastinal window) showing the aortic stent delineating the normal aortic lumen (dashed arrow). The excluded aneurysm has retracted and is now completely thrombosed and of diminished size (solid arrow).
case_images: mrm-20-1-1004-g001.jpg
case_images: PMC11798534_01_mrm-20-1-1004-g001.jpg
case_images: f1-mrm-20-1-1004
case_images: A chest x-ray, performed at the Emergency Department, revealed a homogeneous left retrohilar pulmonary consolidation that reached the posterior wall and crossed the fissure (Figure 1A). CT was performed on the 4th day of admission. CT revealed a ruptured saccular aneurysm of the descending thoracic aorta, contained in the adjacent structures, with a high risk of open rupture and exit to the thorax (Figure 1B). The thoracic PET-CT demonstrated an hypermetabolic focus (Figure 1C). A follow up CT 44 days after admission showed improvement in the aneurysm (Figure 1D).