fig7

Figure 7. PAU (Penetrating Aortic Ulcer) may exhibit rapid progression. (A) Initial imaging conducted shortly after the sudden onset of thoracic pain showing an ulcerating lesion on the aortic wall at the level of the descending thoracic aorta. Subsequent angio-CT scans performed at 48 h (B) and 72 h (C) demonstrate progressive expansion of the ulcerating aortic lesion.