Exploring the role of 3D transabdominal pelvic ultrasound: a pictorial review.

Transabdominal pelvic ultrasound plays a pivotal role in the evaluation of pediatric gynecologic pathology, such as Müllerian anomalies and intrauterine device (IUD) malposition. The diagnostic value of this examination can be significantly increased by adding three-dimensional (3D) images, which offer true coronal reconstructions and enhance anatomic detail. Increasing the yield of the examination has the potential to spare the patient discomfort, time, and/or cost. This pictorial essay explores the applications of this widely available, but underutilized, tool while providing embryologic context and pathologic background for some of the most consequential diagnoses radiologists must recognize.