A 38-year-old primigravid woman comes to the office at 18 weeks gestation due to palpitations and pelvic pressure. She has been consistent with
prenatal care. She is following a healthy diet and takes prenatal vitamins daily. She does not
smoke or use
alcohol or illicit drugs. Temperature is 37.5°C (99.5°F),
pulse is 110/min, and
blood pressure is 130/80 mmHg. On physical examination, the patient’s skin is moist and warm.
Uterus size is consistent with 22 weeks of gestation. When the patient is holding her hands stretched, a mild
tremor is noted. The
thyroid gland is normal to palpation and nontender. Laboratory tests show hCG concentrations of 110,000 mIU/mL. TSH is 0.1 μU/mL. An abdominal ultrasound is obtained and shown below.
Reproduced from: Wikimedia CommonsFurther evaluation would most likely reveal which of the following
karyotypes?
