Aging 81 year old patient shows a symmetric normal thickening of the ventricular septum at the LVOT on a CTscanAshley Davidoff001 heart 81 asymmetric subaortic septum normal 96 year old patient shows a symmetric normal thickening of the ventricular septum at the LVOT on a CTscanAshley Davidofftags asymmetric subaortic septum 96 year old patient shows a symmetric normal thickening of the ventricular septum at the LVOT on a CTscanAshley Davidofftags asymmetric subaortic septum