Ultrasound in obstetrics and gynaecology

Ultrasound (US) is a key investigation in Obstetrics and Gynaecology and is commonly used in screening, diagnosing, treatment and follow-up. It is quick, cheap, widely available, portable and does not involve ionizing radiation. US can also be used to guide aspiration cytology or biopsy, as well as being a screening tool. This review discusses the role of ultrasound in both benign and malignant gynaecology, early pregnancy and obstetrics. The ultrasound findings of common female pelvic and obstetric pathology are considered and related to current evidence-based practice.