{Reference Type}: Case Reports {Title}: Type III fetal redundancy of the foramen ovale flap mimics hemodynamic changes of mitral stenosis. {Author}: Peng X;Zhang P;Pan M;Hui S;Shen T;You L;Zhao B; {Journal}: Echocardiography {Volume}: 41 {Issue}: 8 {Year}: 2024 Aug {Factor}: 1.874 {DOI}: 10.1111/echo.15879 {Abstract}: Type III redundancy of the foramen ovale flap (RFOF) mimics hemodynamic changes of mitral stenosis(MS), which has not been particularly highlighted in previous literature but carries a favorable prognosis.