Related Experiment Video
Updated: Jun 22, 2026

Cox-Maze IV Procedure Concomitant with Valvular Surgery In Situs Inversus Dextrocardia: A Single-Center Experience in China
Published on: February 11, 2022
[Cor triatriatum diagnosed in a 55-year-old man]
Małgorzata Knapp1, Bozena Sobkowicz, Anna Lisowska
1Katedra i Klinika Kardiologii, Uniwersytet Medyczny, Białystok.
Cor triatriatum is a rare congenital heart defect where the left atrium is divided by a membrane. This condition, often mimicking mitral stenosis, can remain undiagnosed until adulthood, as seen in a 55-year-old patient.
Area of Science:
- Cardiology
- Congenital Heart Disease
- Adult Congenital Heart Disease
Background:
- Cor triatriatum is a rare congenital anomaly characterized by a fibro-muscular membrane dividing the left atrium.
- Typically diagnosed in infancy or early childhood, it can present in adulthood.
- The obstruction of blood flow across the membrane leads to symptoms resembling mitral stenosis.
Observation:
- A case study of an adult patient diagnosed with cor triatriatum at 55 years of age.
- The patient presented with clinical features mimicking mitral stenosis.
- This highlights the potential for late diagnosis in adult congenital heart disease.
Findings:
- Confirmation of cor triatriatum in an adult patient.
- The anomaly presented with symptoms consistent with significant left atrial obstruction.
- Delayed diagnosis in adulthood is possible for this congenital condition.
Implications:
- Cor triatriatum should be considered in the differential diagnosis of adult patients presenting with mitral stenosis-like symptoms.
- Late diagnosis can impact long-term patient management and outcomes.
- Increased awareness and diagnostic vigilance for adult congenital heart disease are warranted.
Related Concept Videos
Mitral Stenosis II: Clinical features and Diagnostic Tests
Mitral Regurgitation II: Clinical Features and Diagnostic Tests
Aortic Regurgitation II: Clinical Features and Diagnostic Tests
Acute Coronary Syndrome III: Diagnostic Studies
Thoracic Aorta
Mitral Stenosis I: Introduction

