MR findings of a rare defect, coronary sinus ASD

Area of Science:

• Cardiology
• Medical Imaging
• Congenital Heart Disease

Background:

• The coronary sinus normally drains cardiac veins into the right atrium.
• An unroofed coronary sinus is a rare congenital heart defect, accounting for less than 1% of all atrial septal defects.
• This anatomical anomaly allows abnormal communication between the coronary sinus and the left atrium.

Observation:

• Unroofed coronary sinus defects are challenging to diagnose due to their rarity and complex anatomy.
• Patients may present late in life with symptoms of right heart failure.
• This case highlights classical clinical and imaging findings in an elderly patient.

Findings:

• Magnetic Resonance Imaging (MRI) offers precise visualization of the defect's location and size.
• Phase contrast velocity-encoded MRI effectively quantifies shunt volume, assessing the severity of the left-to-right shunt.
• The study details the characteristic imaging features of this rare cardiac anomaly.

Implications:

• Accurate diagnosis of unroofed coronary sinus is crucial for appropriate management and preventing complications like heart failure.
• Advanced imaging techniques like MRI are vital for characterizing complex congenital heart defects.
• Early identification and intervention can improve outcomes for patients with this rare condition.