A sonographic demonstration of the normal esophagus in the second and third trimesters appears as a _________________.

A dilated bladder with a “keyhole” appearance is most likely which one of the following conditions?

The normal AP diameter of the renal pelvis at 20 weeks’ gestation should not exceed _____ mm.

The sonographic findings of increased nuchal thickening, shortened femurs, cardiac anomalies, and pyelectasis may be seen in which one of the following?

Patients on tamoxifen therapy have an increased risk of which one of the following reactions?

The presence of umbilical vessels crossing the internal os of the cervix is called which one of the following?

Functioning endometrial tissue is present outside of the uterus in which one of the following common conditions?

Which one of the following terms is used to describe the herniation of the meninges and brain through a calvarium defect?

Beckwith-Wiedemann syndrome includes all of the following except:

Which one of the following statements about a fetal goiter is incorrect?