The most common site of acute aoic dissection is
This occurs when a defect or flap occurs in the intima of the aoa, resulting in blood tracking into the aoic tissues splitting the medial layer and creating a false lumen. It most commonly occurs in the ascending aoa or, less often, just distal to left subclan ae. Reference: Bailey and love, 27th edition, page no. 909
Right lateral wall of ascending aoa
Arch of aoa
Suprarenal abdominal aoa
Infrarenal abdominal aoa
Vascular surgery