Transvaginal color flow imaging in the follow-up of invasive gestational trophoblastic disease: a case report.

A case of invasive gestational trophoblastic disease after partial hydatidiform mole was presented in this study in which the diagnosis was made along with the treatment being monitored by means of transvaginal color Doppler ultrasound. In this case, the appearance or disappearance of vascular changes induced by invasive mole corresponded with serum beta human chorionic gonadotropin (beta-hCG) titer. Vascular changes displayed on color Doppler scanning may thus complement the application of hCG in postmolar pregnancy surveillance.