(A) Overview of the Elastica van Gieson staining of the aortic dissection at the branch of the intercostal artery (asterisk). (B) Microscopic examination of elastin staining showing the destruction of the elastic lamellar architecture in the media layer of the aortic wall. (C) Elastic fibres are much more stretched on the adventitial side of the false lumen than on the intimal side. (D and E) The elastic fibres on the intimal side gradually gather and terminate at the orifice of the aortic branch, while the elastic fibres on the adventitial side extend into the aortic branch.