ABSTRACT
Spontaneous resolution of ectopic pregnancy is a recognized phenomenon. Currently, declining quantitative beta-hCG levels is the only effective predictor for monitoring such phenomenon. The aim of this study was to identify the potential sonographic predictors of spontaneous resolution of ectopic pregnancy. The study included 148 patients with transvaginal sonographic diagnosis of ectopic pregnancies. Two quantitative beta-hCG levels measurements were performed for all patients within the first 48 hours of initial diagnosis. Patients with rising beta-hCG levels were considered for immediate surgery, while patients with declining beta-hCG levels were considered for expectant management based on the follow up results of beta-hCG levels and transvaginal sonography. We evaluated 4 ultrasonic parameters as predictors for the outcome of ectopic pregnancy, which were the size and vascularity of extrauterine mass the presence of gestational sac and free fluid at cul de sac. Our results showed that low vascularity, high resistive index of ectopic mass and lack of gestational sac were the most useful ultrasonic predictors of spontaneous resolution of ectopic pregnancies in patients with declining beta-hCG levels