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Figure 1: Four chamber(a) view shows dilated right atrium and right ventricle, dilated coronary sinus. The terminal unroofing of the coronary sinus is demonstrated by arrow in the subxiphoid image, (b) RA-right atrium, LA-left atrium, CS-coronary sinus, RV-right ventricle, LV-left ventricle

Figure 1: Four chamber(a) view shows dilated right atrium and right ventricle, dilated coronary sinus. The terminal unroofing of the coronary sinus is demonstrated by arrow in the subxiphoid image, (b) RA-right atrium, LA-left atrium, CS-coronary sinus, RV-right ventricle, LV-left ventricle