Sequential-contingent strategy for fallopian tube evaluation using hysterosalpingo foam sonography: a cost analysis.

Background: Tubal pathology is the etiological factor in 20% of couples with female infertility. Historically, diagnostic evaluation of the fallopian tubes has been performed by means of hysterosalpingography (HSG). Hysterosonosalpingography with EXEM foam is a recent technique with supposedly comparable effectiveness to HSG, but with better tolerability for patients.