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Highlights • We evaluated the diagnostic accuracy of hysterosalpingo-foam sonography (HyFoSy) to confirm proximal tubal occlusion in subfertile women treated for a hydrosalpinx by an Essure® intratubal device. • HyFoSy is as able as HSG to confirm proximal tubal occlusion after placement of an Essure® device as treatment for a hydrosalpinx prior to IVF. • If HyFoSy demonstrates tubal patency, a subsequent HSG needs to be performed to validate this finding. • HyFoSy does not expose patients to radiation like during HSG. • HyFoSy is a less painful and a less time-consuming examination compared with HSG.