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KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
TERMINOLOGY
Synonyms
- Usually refers to cor triatriatum sinister
- Cor triatriatum dexter: Analogous abnormality in right atrium
Definitions
- Cor triatriatum sinister: Fibromuscular diaphragm or membrane dividing left atrium into 2 chambers
- Posterior (proximal or accessory) chamber receives all or part of pulmonary veins
- Anterior (distal or left atrium) chamber connects to left atrial appendage (LAA) and mitral valve
- Communication between chambers through defect of varying size in membrane
- Accessory chamber may connect to right atrium only or have total anomalous venous return/connection (TAPVR/C)
- Cor triatriatum dexter: Analogous abnormality in right atrium; due to persistence of right valve of sinus venosus
- 2 right atrial chambers
- Sinus venarum receiving superior vena cava (SVC) and inferior vena cava (IVC)
- Trabeculated portion connecting to tricuspid valve
- May mimic Ebstein anomaly
- 2 right atrial chambers
- Cor triatriatum sinister: Fibromuscular diaphragm or membrane dividing left atrium into 2 chambers
IMAGING
General Features
CT Findings
MR Findings
Echocardiographic Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Staging, Grading, & Classification
CLINICAL ISSUES
Presentation
Demographics
Treatment
Selected References
- Diestro JDB et al: Cor triatriatum and stroke. BMJ Case Rep. 2017, 2017
- Li WW et al: Cathether-based interventional strategies for cor triatriatum in the adult - feasibility study through a hybrid approach. BMC Cardiovasc Disord. 15:68, 2015
- Barrea C et al: Images in cardiovascular medicine: cor triatriatum dexter mimicking Ebstein disease. Circulation. 120(11):e86-8, 2009
- Thakrar A et al: Cor triatriatum: the utility of cardiovascular imaging. Can J Cardiol. 23(2):143-5, 2007
- Modi KA et al: Diagnosis and surgical correction of cor triatriatum in an adult: combined use of transesophageal and contrast echocardiography, and a review of literature. Echocardiography. 23(6):506-9, 2006
- Sarikouch S et al: Adult congenital heart disease: cor triatriatum dextrum. J Thorac Cardiovasc Surg. 132(1):164-5, 2006
- Slight RD et al: Cor-triatriatum sinister presenting in the adult as mitral stenosis: an analysis of factors which may be relevant in late presentation. Heart Lung Circ. 14(1):8-12, 2005
Related Anatomy
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Related Differential Diagnoses
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References
Tables
Tables
KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
TERMINOLOGY
Synonyms
- Usually refers to cor triatriatum sinister
- Cor triatriatum dexter: Analogous abnormality in right atrium
Definitions
- Cor triatriatum sinister: Fibromuscular diaphragm or membrane dividing left atrium into 2 chambers
- Posterior (proximal or accessory) chamber receives all or part of pulmonary veins
- Anterior (distal or left atrium) chamber connects to left atrial appendage (LAA) and mitral valve
- Communication between chambers through defect of varying size in membrane
- Accessory chamber may connect to right atrium only or have total anomalous venous return/connection (TAPVR/C)
- Cor triatriatum dexter: Analogous abnormality in right atrium; due to persistence of right valve of sinus venosus
- 2 right atrial chambers
- Sinus venarum receiving superior vena cava (SVC) and inferior vena cava (IVC)
- Trabeculated portion connecting to tricuspid valve
- May mimic Ebstein anomaly
- 2 right atrial chambers
- Cor triatriatum sinister: Fibromuscular diaphragm or membrane dividing left atrium into 2 chambers
IMAGING
General Features
CT Findings
MR Findings
Echocardiographic Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Staging, Grading, & Classification
CLINICAL ISSUES
Presentation
Demographics
Treatment
Selected References
- Diestro JDB et al: Cor triatriatum and stroke. BMJ Case Rep. 2017, 2017
- Li WW et al: Cathether-based interventional strategies for cor triatriatum in the adult - feasibility study through a hybrid approach. BMC Cardiovasc Disord. 15:68, 2015
- Barrea C et al: Images in cardiovascular medicine: cor triatriatum dexter mimicking Ebstein disease. Circulation. 120(11):e86-8, 2009
- Thakrar A et al: Cor triatriatum: the utility of cardiovascular imaging. Can J Cardiol. 23(2):143-5, 2007
- Modi KA et al: Diagnosis and surgical correction of cor triatriatum in an adult: combined use of transesophageal and contrast echocardiography, and a review of literature. Echocardiography. 23(6):506-9, 2006
- Sarikouch S et al: Adult congenital heart disease: cor triatriatum dextrum. J Thorac Cardiovasc Surg. 132(1):164-5, 2006
- Slight RD et al: Cor-triatriatum sinister presenting in the adult as mitral stenosis: an analysis of factors which may be relevant in late presentation. Heart Lung Circ. 14(1):8-12, 2005
