Cabral, MargaridaSantos, Luís GraçaRuivo, CatarinaMorais, João2025-12-042025-12-042025-07https://www.reccardioclinics.org/en-cor-triatriatum-sinistrum-in-adulthood-articulo-S260515322400150X2605-1532http://hdl.handle.net/10400.8/14893Indexed keywords EMTREE medical terms adult; adulthood; Article; cardiovascular magnetic resonance; case report; clinical article; clinical feature; computed tomographic angiography; consultation; cor triatriatum; cor triatriatum sinistrum; Doppler echocardiography; dyslipidemia; electrocardiogram; emergency ward; fatigue; fenestration; follow up; heart left atrium; human; malaise; male; middle aged; mitral valve; physical examination; pulmonary vein; smoking; surgical drainage; symptomatology; systole; thorax pain; transthoracic echocardiography.A case is presented of cor triatriatum sinistrum , which has been diagnosed in an adult. The findings of invasive and noninvasive studies have resulted in a diagnosis, which can be confirmed by using two-dimensional echocardiography.engjournal article10.1016/j.rccl.2024.11.0022605-1575