Cor triatriatum sinister in a cat: case report

Faviana Aimé Maza León; Tatiana Rosa Fernandes; Giovanna Gati de Souza; Rafael Cerantola Siqueira; Marcílio Félix; Raphael Lucio Andreatti Filho; Alessandre Hataka

doi:10.11606/issn.1678-4456.bjvras.2025.227921

Authors

Faviana Aimé Maza León Universidade Estadual Paulista. Faculdade de Medicina Veterinária e Zootecnia https://orcid.org/0000-0002-3385-2619
Tatiana Rosa Fernandes Serviço de Cardiologia Veterinária Tatiana Rosa Empresarial https://orcid.org/0009-0002-4026-5874
Giovanna Gati de Souza Universidade Estadual Paulista. Faculdade de Medicina Veterinária e Zootecnia https://orcid.org/0000-0003-3914-627X
Rafael Cerantola Siqueira Universidade de Marília, Faculdade de Medicina Veterinária e Zootecnia
Marcílio Félix Universidade de Marília, Faculdade de Medicina Veterinária e Zootecnia https://orcid.org/0000-0002-5126-2540
Raphael Lucio Andreatti Filho Universidade Estadual Paulista. Faculdade de Medicina Veterinária e Zootecnia https://orcid.org/0000-0003-4939-8024
Alessandre Hataka Universidade Estadual Paulista. Faculdade de Medicina Veterinária e Zootecnia https://orcid.org/0000-0002-2023-212X

DOI:

https://doi.org/10.11606/issn.1678-4456.bjvras.2025.227921

Keywords:

Anomaly, Pulmonary hypertension, Hemodynamic, Cats, CTS

Abstract

Cor triatriatum sinister is an uncommon congenital condition characterized by an aberrant membrane that divides the left atrium into two chambers due to an abnormal incorporation of the pulmonary veins. This anomaly obstructs blood flow to the left atrium, leading to pulmonary hypertension and, consequently, congestive heart failure. This case report presents a cat that was treated in the veterinary cardiology service for dyspnea. An echocardiogram revealed an intra- atrial membrane within the left atrium. Due to the patient´s deteriorating condition, euthanasia was performed, and subsequent necropsy and histopathology examination also confirmed the diagnosis of cor triatriatum sinister.

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References

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Cor triatriatum sinister in a cat: case report

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