ABSTRACT
Pregnancies ended in abortion are among the most common causes of visits to Gynecology clinics. Ultrasonography is an easy, accessible and cost-benefit modality to diagnos cases of abortions. It also differentiates abortion from other causes of first-trimester bleeding. It helps to select the best therapeutic approach particularly the necessity of performing curettage. A descriptive study was conducted on 159 patients presenting to Imam Hossien Medical Center during the years 1380 to 1383. Data were collected from files of patients which were sampled non-randomly. The mean age of patients was 28.1 [ +/- 5.1]. Abortion was mostly observed in patients between 20-30 years of age; Sixty nine percent of abortions were in weeks <12, and 31% were in weeks 12-20; Most patients [37.7%] had gravid 1. The most common sign was spotting; Mean pregnancy duration was 10 [ +/- 2.2] weeks. Incomplete abortion was the most common form. 11 cases of Hydatidiform mole were found, one resulted in Choriocarcinoma. Subchorionic hemorrhage was seen in 87% of patients in the weeks between 10-20. Live fetuses were seen in 10 cases in which the presence of heart beat indicated continuing of pregnancy in 90% of cases. According to the prevalence of Incomplete Abortions in this study, sonographic findings were important in performing curettage. The difference between age of occurrence of Hydatidiform mole from that in the literature and the role of subchorionic hemorrhage in cases ended in abortion is recommended to reevaluate in the future studies