Sonography of pelvoabdominal cystic masses in children and adolescents.

A series of large pelvoabdominal cystic masses in young females is presented. Ultrasound examination is the procedure of choice for the initial evaluation of these uncommon masses. Ultrasound can characterize internal structure and relationship to contiguous organs and tissues, and the examination can often suggest the etiology. In two cases, multiple pathologic entities were encountered.