If ectopic pregnancy is suspected, transvaginal ultrasonography should be performed. The sensitivity of transvaginal ultrasonography for detecting ectopic pregnancy is 95 percent in a patient with positive pregnancy test (human chorionic gonadotropin level greater than 25 mlU per mL 125 IU per L]) and any abnormal ultra sound finding, whereas a negative pregnancy test and normal ultrasound findings virtually exclude ectopic pregnancy Transvaginal ultrasonography is also helpful for diagnosing other gynecologic pathology, such as fibroids, ovarian masses, ovarian torsions and tuboovarian abscesses.