Fig. 6From: Fetoscopic endoluminal tracheal occlusion and reestablishment of fetal airways for congenital diaphragmatic herniaa After detachment the balloon can be seen through the vocal cords which are in this case just above it. b On ultrasound the balloon is visible as a hypoechogenic area. Power Doppler can help to distinguish the balloon from the adjacent blood vessels. © UZ Leuven, UZ Leuven, BelgiumBack to article page