Endoscopic Repair of Obstructive Cor Triatriatum

Graphical abstract
Highlights • CTS is characterized by a membrane that divides the left atrium into two chambers. • This patient also presented with mitral regurgitation. • The authors present multimodality images and intraoperative video clips. • In this case, repair was performed with a minimally invasive approach. • Intraoperative echocardiography is an essential element of patient care.