Severe Stenosis of an Anomalous Circumflex Artery Mimicking a Chronic Total Occlusion

Area of Science:

• Cardiovascular medicine
• Interventional cardiology
• Anatomical variations

Background:

• Anomalous coronary artery origins are rare cardiovascular conditions.
• Identifying anomalous coronary arteries is straightforward without significant stenosis.
• Severe stenosis can limit anterograde flow, complicating visualization and potentially leading to misdiagnosis as chronic total occlusion (CTO).

Observation:

• This case highlights an anomalous circumflex coronary artery with severe stenosis.
• The condition was initially misidentified as a chronic total occlusion (CTO) due to limited anterograde flow.
• The patient received medical management for several years with persistent symptoms.

Findings:

• The anomalous circumflex artery with severe stenosis presented as a CTO on initial angiography.
• Specific angiographic patterns of retrograde filling in anomalous circumflex arteries are key diagnostic indicators.
• This case exemplifies the characteristic angiographic appearance of such anomalies.

Implications:

• Accurate identification of anomalous coronary arteries, even with severe stenosis, is vital for appropriate patient management.
• Recognizing specific angiographic patterns can prevent misdiagnosis of CTO and ensure timely, correct treatment.
• Improved awareness among clinicians can lead to better outcomes for patients with rare coronary artery variations.