•Degenerative common AVC defect can mimic rheumatic MV stenosis.•Closure of primum ASD can be achieved percutaneously.•Live 3D multiplanar TEE is crucial for procedural guidance.
Keywords: Common AV canal defect; Percutaneous ASD closure; Primum ASD.
2023 by the American Society of Echocardiography. Published by Elsevier Inc.