An ectopic pregnancy occurs when a pregnancy implants outside the uterus, most commonly in a fallopian tube.
Symptoms may include one-sided lower abdominal pain, vaginal bleeding that is different from a normal period, dizziness, shoulder-tip pain, or discomfort when using the toilet in early pregnancy.
Imaging helps look for whether the pregnancy is inside the womb, whether there is a mass near the tube or ovary, and whether there may be internal bleeding.
Pelvic ultrasound is central because it helps look for an intrauterine pregnancy, an adnexal mass, or internal bleeding.
This can be urgent and may require medication, surgery, and close obstetric or gynecology follow-up.
This entry explains the condition. The next step is having a radiologist interpret your specific scan, not a general definition.