Fig. 6
From: Features of infective native aortic aneurysms on computed tomography
Surrounding organ involvement of INAA. a Axial CECT of a 58-year-old male patient depicts an infrarenal aneurysm with enhancing periaortic soft-tissue mass involving the left psoas muscle. The concave eroded anterior border of the adjacent vertebral body represents spondylitis. b Axial CECT of an 84-year-old female patient presenting with gastrointestinal hemorrhage reveals multiple air bubbles in the infrarenal aneurysm connecting to the adjacent duodenum, suggestive of aortoenteric fistula. A rim-enhancing fluid collection involving enlarged right psoas muscle is also noted. c Coronal angiographic CT image of a 66-year-old male patient reveals early enhancement of the IVC connecting to the aorta via multilobulated aortoiliac aneurysm, suggestive of aortocaval fistula. d Axial CECT of an 84-year-old female patient reveals active contrast extravasation (white arrow) from INAA into the esophagus. Asterisk (*) indicates aortoesophageal fistula. INAA infective native aortic aneurysm, CECT contrast-enhanced computer tomography, IVC inferior vena cava