Obstetric Ultrasound Quiz
Mr . J. J. is a 25-year-old. G3P2002, white female. Mrs. J. J. had stopped birth control pills about one year previously and since then had regular menstrual cycles. Her menstrual dates are known with certainty. At 16 weeks gestational age (menstrual dates), she had a maternal] serum alpha fetoprotein (MSAFP) screening test. The result was 41 ng/ml (10.8 MOM). The test was repeated the following week and the result was 470 nglm1 (11.2 MOM).
She was referred for an ultrasound examination at 18 weeks gestation. Additional history obtained at this time indicated no prior malformed offspring, no genetic diseases in the patient's or her husband's families, no exposure to drugs or radiation, and a family history of diabetes. Realtime ultrasound examination was performed.
Representative ultrasound pictures are shown.
What is your diagnosis?
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