Cor polyatriatum: a very rare and original variant of cor triatriatum

Area of Science:

• Cardiology
• Congenital Heart Disease
• Cardiac Anatomy

Background:

• Cor triatriatum sinister is a rare congenital heart defect characterized by left atrial partitioning.
• A fibromuscular membrane divides the left atrium into proximal and distal chambers, affecting blood flow.
• Obstruction can lead to pseudo-mitral stenosis and pulmonary venous hypertension.

Observation:

• This report details the first documented case of 'cor polyatriatum'.
• The condition involves a primary fibromuscular membrane and two additional branching membranes.
• This complex structure results in a total of five distinct atrial chambers.

Findings:

• The unique 'cor polyatriatum' anatomy presents a significant deviation from classic cor triatriatum sinister.
• Multiple membranes create an intricate five-chambered atrial system.
• This anatomical complexity has not been previously described in medical literature.

Implications:

• This case expands the spectrum of atrial septation anomalies.
• Understanding this rare anatomy is crucial for accurate diagnosis and surgical planning.
• Further research may elucidate the embryological origins and clinical management of such complex congenital heart defects.