PMC6037901_01
CT angiography. A: Initial CT angiography showing abdominal aortic aneurysm upstream of the coeliac axis (28 x 23 x 29 mm) in axial view. B: Initial CT angiography finding an aneurysm on the descending thoracic aorta (18 x 9 mm and 22 mm in height) with an inflammatory aspect as observed in coronal view. C: Control CT angiography 9 days after surgery showing an increase in size of the abdominal aorta infrarenal aneurysm (10 x 8 x 10 mm) in axial view. D: Control CT angiography 3-dimensional reconstruction.
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Subsequently, a CT angiography showed three separate aortic aneurysms with surrounding inflammatory processes: two in the abdominal aorta (Fig. 1A) and one in the thoracic aorta (Fig. 1B). A CT 9 days after surgery showed an increased size of the two aneurysms (Fig. 1.C.D).
Nuclear medicine images of the descending thoracic aorta. A. Fluorinated Desoxyglucose Scintigraphy has shown a paravertebral hypermetabolic activity. B. Positron Emission Tomography using Fluorinated Desoxyglucose (FDG-PET) showing the origin of this hyperactivity located on aneurysm of the descending thoracic aorta. C. Activity has shown on aneurysm of the descending thoracic aorta with Labelled Leucocyte Scintigraphy (LLS) in agreement with FDG-PET, suggestive of a septic process in the thoracic aorta aneurysm with adjacent infiltration.
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Tomography using Fluorinated Desoxyglucose (FDG-PET) and Labelled Leucocyte Scintigraphy (LLS) were suggestive of a septic process in the thoracic aorta aneurysm and in the abdominal aorta aneurysm located below the left renal artery (hypermetabolic activity with LLS in agreement with FDG-PET) (Fig. 2). Transthoracic echocardiography found no valvular lesion.