Panel a shows a sagittal section. Panel b shows a coronal section with red arrows pointing to specific areas. Panels c, d, and e show axial sections. The scan highlights the abdominal aorta with a thick rim of hypodense soft tissue surrounding the aneurysmal segment, indicated by a green arrow. The aortic root, ascending aorta, aortic arch, and its branches appear normal. The renal arteries and inferior mesenteric artery are also visible and appear normal in course and calibre.
Panel of CT angiography images demonstrating vascular involvement of thoracic and abdominal vessels in Patient 2. (a–e) CT angiography of the thorax and abdomen of patient 2: coronal (a), sagittal (b), and axial (c–e) sections demonstrating the fusiform and irregular outline of the abdominal aorta (long red arrow in b) extending from the diaphragmatic hiatus to its bifurcation at the L5 vertebral level with a maximum transverse caliber of 2.7 cm. A thick rim of hypodense soft tissue is seen surrounding the aneurysmal segment suggestive of partial thrombosis (green arrow mark). Variable lengths of proximal parts of the celiac trunk (upper short red arrow in b), superior mesenteric artery (lower short red arrow in b), and left renal artery show fusiform dilatation. Aortic root, ascending aorta, aortic arch (c) and its branches (arrowhead), and descending thoracic aorta are normal in course, caliber, and contrast opacification. The two renal arteries are seen on the right side, and the inferior mesenteric artery is normal in course, caliber, and outline.