[The roentgenologic diagnosis of cor triatriatum sinistrum]

Area of Science:

• Cardiology
• Medical Imaging
• Pediatric Cardiology

Background:

• Cor triatriatum sinistrum is a rare congenital heart defect.
• It involves an anomalous division of the left atrium by a membrane.
• This anomaly can lead to significant hemodynamic alterations.

Purpose of the Study:

• To classify the hemodynamic status of cor triatriatum sinistrum.
• To correlate hemodynamic types with roentgenologic features.
• To aid in differentiating cor triatriatum sinistrum from other cardiac conditions.

Main Methods:

• Retrospective analysis of 10 cases of cor triatriatum sinistrum.
• Classification of hemodynamic status based on septal foramen, atrial shunt, and pulmonary venous connection.
• Review of roentgenologic features for each hemodynamic type.

Main Results:

• Four hemodynamic types identified: Pulmonary venous hypertensive, polyemic, cyanotic polyemic, and normal.
• Roentgenologic features varied significantly across these types.
• Common mimicry of mitral stenosis and atrial septal defect on imaging.

Conclusions:

• Hemodynamic status in cor triatriatum sinistrum is variable and influences clinical presentation.
• Distinct roentgenologic patterns are associated with different hemodynamic classifications.
• Awareness of these variations improves diagnostic accuracy for cor triatriatum sinistrum.