title: [CT of abdominal aortic aneurysms--aneurysmal size and thickness of intra-aneurysmal thrombus as risk factors of rupture].
abstract: In order to seek for the factors to suggest a risk of rupture of abdominal aortic aneurysms (AAA), we measured the largest diameter of AAA and the thickness of intra-luminal thrombus on CT in 72 patients. The mean aneurysmal size was 64 mm in diameter in 9 patients with ruptured aneurysm and 61 mm in diameter in 63 patients with non-ruptured aneurysm respectively (p less than 0.90). The rupture of AAA was seen in 3 of 30 patients with AAA of the small size (less than 50 mm in diameter), in 3 of 16 patients with AAA of the intermediate size (51-66 mm in diameter) and in 3 of 26 patients with AAA of the large size (more than 70 mm in diameter), respectively. The mean intra-luminal thrombus was 9 mm in 9 patients with ruptured aneurysm and 19 mm in thickness in 63 patients with non-ruptured aneurysm respectively (p = 0.05). We concluded from the above results that the aneurysmal size was not important, but the thickness of intra-luminal thrombus was useful for suggestion of a risk of rupture of AAA.
authors.affiliation: Showa University, School of Medicine.
authors.forename: T
authors.initials: T
authors.lastname: Kushihashi
authors.forename: H
authors.initials: H
authors.lastname: Munechika
authors.forename: S
authors.initials: S
authors.lastname: Matsui
authors.forename: T
authors.initials: T
authors.lastname: Moritani
authors.forename: Y
authors.initials: Y
authors.lastname: Horichi
authors.forename: T
authors.initials: T
authors.lastname: Hishida
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001012:Aorta, Abdominal; D001014:Aortic Aneurysm / Q000000981:diagnostic imaging* / Q000453:epidemiology / Q000473:pathology; D001019:Aortic Rupture / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D014057:Tomography, X-Ray Computed