What is an HSG?

A hysterosalpingogram (HSG) is a real-time X-ray test that examines the uterus and fallopian tubes. It relies on fluoroscopy, which allows doctors to visualize the flow of contrast dye as it occurs to identify abnormalities in the reproductive system. It’s often used to investigate fertility issues such as recurrent miscarriage or difficulty conceiving. By highlighting the features of the uterus and fallopian tubes, the exam can reveal blockages and uterine anomalies like adhesions, fibroids, and other masses.