Type A aortic dissection presenting as superior vena cava syndrome

Area of Science:

• Cardiology
• Thoracic Surgery
• Medical Diagnostics

Background:

• Acute type A aortic dissection (AD) is a life-threatening cardiovascular emergency.
• Typical presentations involve sudden chest or back pain, often described as tearing.
• Superior vena cava (SVC) syndrome usually results from chronic conditions compressing the SVC.

Observation:

• A 51-year-old male presented with acute symptoms of facial swelling, head fullness, and dyspnea.
• Initial clinical diagnosis was SVC syndrome, supported by chest radiograph findings of a widened mediastinum.
• CT scan revealed a large type A aortic dissection severely compressing the SVC.

Findings:

• The patient's SVC syndrome was caused by an acute type A aortic dissection, an atypical presentation.
• This case underscores that SVC syndrome can be a rare initial manifestation of acute AD.
• Prompt diagnosis via advanced imaging was crucial despite the unusual clinical picture.

Implications:

• Clinicians should consider acute aortic dissection in the differential diagnosis of SVC syndrome, even without classic chest pain.
• This case emphasizes the need for high vigilance and comprehensive diagnostic workup in emergency settings.
• Recognizing rare presentations of AD can improve patient outcomes by enabling faster intervention.