Video legend (Video 1):
The trans-oesophageal mid-oesophageal four chambered view showing a multi-septate thick walled hydatid cyst in occupying the base and mid-interventricular septum , with partially adherent septal tricuspid leaflet and also obliterating the right ventricle and left ventricle cavities(RA: right atria, RV: right ventricle, LA: left atria , LV: left ventricle, IVS: interventricular septum , STL: septal tricuspid leaflet )