Cor Triatriatum

A malformation of the heart in which the embryonic common PULMONARY VEIN was not incorporated into the LEFT ATRIUM leaving behind a perforated fibromuscular membrane bisecting the left atrium, a three-atrium heart. The opening between the two left atrium sections determines the degree of obstruction to pulmonary venous return, pulmonary venous and pulmonary arterial hypertension.

Year introduced: 1987

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Tree Number(s): C14.240.400.200, C14.280.400.200, C16.131.240.400.200

MeSH Unique ID: D003310

Entry Terms:

• Cor Triatriatum Sinistrum
• Subdivided Left Atrium
• Atriums, Subdivided Left
• Atrium, Subdivided Left
• Left Atriums, Subdivided
• Left Atrium, Subdivided
• Subdivided Left Atriums
• Triatrial Heart
• Hearts, Triatrial
• Heart, Triatrial
• Triatrial Hearts

Previous Indexing:

• Heart Atrium (1966-1986)
• Heart Defects, Congenital (1966-1986)

All MeSH Categories
Diseases Category
Cardiovascular Diseases
Cardiovascular Abnormalities
Heart Defects, Congenital
Cor Triatriatum

All MeSH Categories
Diseases Category
Cardiovascular Diseases
Heart Diseases
Heart Defects, Congenital
Cor Triatriatum

All MeSH Categories
Diseases Category
Congenital, Hereditary, and Neonatal Diseases and Abnormalities
Congenital Abnormalities
Cardiovascular Abnormalities
Heart Defects, Congenital
Cor Triatriatum