A 25yr old patient presents for a first trimester scan with uterine size consistent with a 12wk fetus but the LMP indicates a 7 week pregnancy. You identify a mass of mottled tissue with cystic components and internal blood flow that occupies the fundus of the uterine cavity. There is also a gestational sac with a 4mm embryo identified in the inferior portion of the endometrial canal. Which of the following best describes these findings?

The disadvantage of chorionic villi sampling over amniocentesis is:

The “snow storm” describes the appearance of __________ on ultrasound.

Placenta previa is best evaluated in a patient with a full bladder.

A circumscribed mass protruding from the fetal surface of the placenta is demonstrated on ultrasound. This most likely represents:

Karyotype results can be processed within 2 to 3 days with this test:

Which of the following is true about amniocentesis?

Which of the following is called trisomy 13?

Another name for a succenturiate lobe in the placenta is?

A patient presents with a 26wk gestation with recent onset of severe cramping and heavy bleeding. What is the most likely finding on the ultrasound exam?