Question

Difficulty: MediumCardiothoracic and Vascular Surgery

Match each clinical vignette describing a patient's physical examination and historical findings with the most accurate description of the underlying vascular pathology.

  • A 65-year-old man presents with buttock and thigh claudication, bilaterally absent femoral pulses, and newly developed erectile dysfunction.Severe atherosclerotic occlusion of the distal abdominal aorta and common iliac arteries
  • A 34-year-old woman presents with a unilateral headache, a pulsatile neck mass, and ipsilateral ptosis and miosis following a hyperextension injury to the neck.Intimal tear leading to intramural hematoma formation in the cervical vessels
  • A 70-year-old man presents with acute, tearing periumbilical pain radiating to the back, profound hypotension, and a palpable, expansile abdominal mass.Transmural degeneration and free rupture of the infrarenal aorta
  • A 45-year-old woman experiences left arm claudication, dizziness during left arm exercise, and a 30 mm Hg systolic blood pressure difference between her upper extremities.Retrograde blood flow in the vertebral artery secondary to proximal vessel stenosis

Answer

Leriche syndrome matches with aortoiliac occlusion; carotid dissection matches with intimal tearing; ruptured AAA matches with infrarenal aortic degeneration; and subclavian steal syndrome matches with retrograde vertebral flow.
Each clinical vignette provides hallmark physical and historical findings of specific vascular emergencies. Accurate diagnosis requires matching the symptoms (such as Horner syndrome, erectile dysfunction, or vertebrobasilar insufficiency) to the underlying anatomic and pathologic derangements affecting the vascular tree.

Step-by-Step Solution

1
Evaluate the first vignette describing buttock claudication, absent femoral pulses, and erectile dysfunction.
Identify the triad of Leriche syndrome.
This specific combination of symptoms points directly to compromised blood flow in the distal aorta and bilateral iliac arteries.
2
Analyze the second vignette featuring post-traumatic headache, a neck mass, and Horner syndrome.
Identify traumatic carotid artery dissection.
Disruption of the sympathetic plexus surrounding the internal carotid artery by an expanding intramural hematoma causes ipsilateral Horner syndrome.
3
Assess the third vignette involving tearing pain, hypotension, and an expansile abdominal mass.
Identify ruptured abdominal aortic aneurysm.
The combination of hemorrhagic shock and an expansile mass in the setting of tearing pain represents transmural rupture of a degenerated infrarenal aorta.
4
Evaluate the fourth vignette describing arm claudication, exertional dizziness, and a blood pressure discrepancy.
Identify subclavian steal syndrome.
Proximal subclavian stenosis causes reversal of blood flow through the vertebral artery during arm exertion, leading to vertebrobasilar insufficiency.

Key Concept

Clinical recognition and pathophysiology of major vascular syndromes
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