while there have been reports both of true aneurysms arising independently in the abdominal ( infrarenal ) and thoracic ( suprarenal ) aortic segments , and of false aneurysms arising secondary to abdominal aortic repair ( at the suture line or as dilatations of residual aneurysmal tissue ) , we believe our case unusual in that the new aneurysm was a discrete and `` '' true '' '' thoracoabdominal dilatation arising just above the renal arteries and terminating just below the superior mesenteric artery .
C1510412
false aneurysms
C0002940
aneurysm