Background Historic studies of nonsyndromic ascending thoracic aortic aneurysms (aTAAs)
reported that the typical aTAA growth rate was approximately 0.6 mm/year, but data were
limited due to relatively few studies using computed tomography (CT) imaging. Our purpose
was to reevaluate the annual growth rate of nonsyndromic aTAAs that do not meet criteria for
surgical repair in veterans in the contemporary era, using modern CT imaging suitable for
highly accurate and reproducible aneurysm measurement. Methods Nonsurgical patients …

Objective: Historic studies of nonsyndromic ascending thoracic aortic aneurysms (aTAAs)
suggested that aTAA growth rate was approximately 0.6 mm/year, but data were limited, with
relatively few studies using computed tomography (CT) imaging. Our objective was to
reevaluate the annual growth rate of nonsyndromic ATAAs that do not meet criteria for
surgical repair in the contemporary era. Methods: Nonsurgical patients (ATAA diameter< 5.5
cm) undergoing aTAA surveillance with repeat CT imaging taken 3-5 years apart were …