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Severe isolated left mainstem coronary artery stenosis. A case report
Summary
A rare case of fibromuscular hyperplasia in the left main coronary artery caused severe symptoms including pulmonary edema. Surgical bypass grafting successfully treated this unusual coronary artery disease.
Area of Science:
- Cardiovascular Medicine
- Vascular Biology
- Interventional Cardiology
Background:
- Left main coronary artery (LMCA) stenosis is a critical condition often caused by atherosclerosis.
- Fibromuscular hyperplasia (FMH) is a non-atherosclerotic, non-inflammatory vasculopathy that rarely affects the coronary arteries.
Observation:
- A 33-year-old man presented with exertional and rest angina, progressing to ischemic acute pulmonary edema.
- Coronary angiography revealed isolated long-segment stenosis of the LMCA without other coronary lesions.
Findings:
- The LMCA stenosis was attributed to fibromuscular hyperplasia, a rare cause of coronary artery disease.
- Surgical intervention with three coronary artery bypass grafts resulted in a successful outcome.
Implications:
- This case highlights fibromuscular hyperplasia as a potential cause of severe coronary artery disease and acute heart failure.
- The findings underscore the importance of considering rare etiologies in young patients with significant coronary artery stenosis and the efficacy of surgical revascularization.