CTICasesNon-Obstructive Cor Triatriatum Sinister
Imaging findings
Chest CT and echocardiography demonstrate a fibrous band dividing the left atrium. The band exhibits dense calcification, which is clearly visible on non-contrast CT. The left atrium is enlarged, but the membrane is non-obstructive, without signs of significant stenosis or elevated trans-membrane gradient.
Key takeaways
Non-obstructive cor triatriatum is often discovered incidentally in adults. Over time, the dividing membrane can develop calcification, which makes it easily visible on chest CT. It must be differentiated from obstructive cor triatriatum or other left atrial masses like myxomas, as the non-obstructive form does not require surgical intervention.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- Left Pre-hyparterial Accessory BronchusCongenital
- Anomalous Systemic Arterial Supply to the Right Lower LobeCongenital
- Pulmonary Tumor Embolism from Hepatocellular CarcinomaNeoplastic
- Staphylococcus aureus Necrotizing Pneumonia with Macklin PhenomenonInfection
- Cor Triatriatum Sinister with Levoatrial Cardinal VeinCongenital
- Diffuse Pulmonary MeningotheliomatosisNeoplastic
- Cardiac HemangiomaNeoplastic
- Pulmonary CryptococcosisInfection
See all cases from March 10, 2018 →