A penetrating aortic ulcer rapidly evolving into aortic dissection in a patient presenting with respiratory tract infection to the emergency department: an acute aortic syndrome case report.

backgroundPenetrating aortic ulcers (PAU) are life-threatening conditions which derive from severely advanced atherosclerotic lesions of the aorta. The clinical course is unpredictable; thus clinical vigilance should be maintained. It is very challenging to separate PAU from co-existing AAS as predisposing factors and findings overlap. CASE PRESENTATION: Case of 58-year-old gentleman, who presented for atypical chest pain in the setting of respiratory tract infection. Computed Tomographic angiography (CTA) of the chest showed a large PAU and intramural hematoma which rapidly progressed into an acute aortic dissection in the emergency department. Close follow up with cardiac point of care ultrasound one hour later detected an intimal flap which was not initially present on CTA. Patient underwent surgical aortic graft replacement and had an uneventful in-hospital stay. DISCUSSION: This case underlines the importance of broadening differential diagnoses in atypical presentations in patients with risk factors. Prompt intervention and careful management are imperative to optimize patient outcomes and prevent complications of aortic lesions. Cardiac point of care ultrasound can help in detecting progression of dynamic atherosclerotic diseases such as acute aortic syndrome.