A case report of intramyocardial bridge on right coronary artery

Area of Science:

• Cardiovascular Anatomy
• Pathology
• Medical Imaging

Background:

• Intramyocardial bridges are congenital anomalies where a segment of a coronary artery travels through the heart muscle.
• They are most commonly observed along the left anterior descending artery and can be superficial or deep.
• While often asymptomatic, they can sometimes lead to myocardial ischemia.

Observation:

• A rare case of an extensive intramyocardial bridge involving a significant portion of the right coronary artery was discovered during a routine autopsy.
• The anomaly encompassed the sinoatrial nodal artery and the posterior descending artery.
• The patient presented with acute respiratory failure due to aspiration pneumonia and showed no clinical signs of coronary insufficiency.

Findings:

• The autopsy revealed an intramyocardial bridge predominantly affecting the right coronary artery, a location significantly less common than the left anterior descending artery.
• Histological examination confirmed the myocardial bridging of the right coronary artery.
• The absence of clinical symptoms related to coronary insufficiency in the presence of this anomaly was noted.

Implications:

• This case highlights the potential for significant right coronary artery intramyocardial bridges to exist asymptomatically.
• It underscores the importance of considering rare coronary anomalies in anatomical and pathological studies.
• Further literature review is warranted to understand the clinical implications and prevalence of right coronary artery intramyocardial bridges.