title: [Stanford type A aortic dissection with closed false lumen: analysis of prognostic factors at initial CT or MRI].
abstract: Nineteen patients with Stanford type A acute aortic dissection with closed false lumen were reviewed. In the follow-up examinations, ulcerlike projection (ULP) in the ascending aorta (AA) or aortic arch (AR) was identified in 8 of 19 patients. In 5 of these 8 patients, acute cardiac tamponade occurred and 3 of them died. In the other 11 patients, there was no mortality, and only one patient underwent elective surgery. The appearance of ULP in the AA/AR is considered an indication for urgent surgery because it is regarded as a precursor of lethal complications such as cardiac tamponade. The purpose of this study was to investigate predictors of the appearance of ULP in the AA/AR with early imagings (CT or MRI) before the appearance of ULP. The patients were divided into two groups: patients with ULP in the AA/AR (8 patients) and others (11 patients). Initial CT or MRI findings of the thoracic aorta were retrospectively statistically analyzed in each group. Three predictive factors were statistically significant for the appearance of ULP in the AA/AR (diameter of the AA > or = 5 cm, thickness of the false lumen of the AA > or = 1 cm, thickness of the false lumen of the AA > or = that of the descending aorta). Close attention should be paid, if any of these 3 factors is observed at initial CT or MRI.
authors.affiliation: Department of Radiology, Nagasaki University School of Medicine.
authors.forename: Y
authors.initials: Y
authors.lastname: Matsuoka
authors.forename: I
authors.initials: I
authors.lastname: Sakamoto
authors.forename: Y
authors.initials: Y
authors.lastname: Ogawa
authors.forename: E
authors.initials: E
authors.lastname: Sueyoshi
authors.forename: K
authors.initials: K
authors.lastname: Hayashi
authors.forename: M
authors.initials: M
authors.lastname: Narimatsu
authors.forename: M
authors.initials: M
authors.lastname: Takagi
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000784:Aortic Dissection / Q000175:diagnosis*; D017541:Aneurysm, False / Q000175:diagnosis; D001011:Aorta / Q000473:pathology; D017545:Aortic Aneurysm, Thoracic / Q000175:diagnosis*; D002305:Cardiac Tamponade / Q000209:etiology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D014057:Tomography, X-Ray Computed