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Ultrasound 5 Weeks Ultrasound 6 Weeks Ultrasound 8 Weeks Ultrasound 12 Weeks

 

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Early pregnancy ultrasound findings and pictures

Advanced Fertility Center of Chicago
Gurnee & Crystal Lake, Illinois

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Ultrasound in early pregnancy: 5.5 weeks from last menstrual period

Five week pregnancy ultrasound with sac and yolk sac
Transvaginal ultrasound of a normal pregnancy at 5 weeks 4 days of gestation
Gestational sac (black area inside the white circled area) is seen
The yolk sac (small white circle at upper right of sac) is a source of nutrients for fetus
Fetus is too small to see this early in pregnancy


Identical twin pregnancy ultrasound
Ultrasound of another pregnancy at same gestational age as above, but with identical (monozygotic) twins
One gestational sac is seen with 2 yolk sacs visible inside it
This results from an early embryo dividing into 2 genetically identical embryos

The vast majority of twins from assisted reproductive technology procedures are not "identical", but result from implantation of 2 embryos that were the result of fertilization of 2 different eggs (see image below)


Fraternal twin pregnancy ultrasound
Ultrasound of a twin pregnancy that resulted from implantation of 2 genetically different embryos (fraternal twins)
Yolk sacs and fetal poles (the early fetus) are seen in 2 completely separate sacs
This pregnancy is at 6 weeks


Back to early pregnancy page

Transvaginal ultrasound of a normal pregnancy at 6.5 weeks of gestation

Transvaginal ultrasound of a normal pregnancy at 8.5 weeks of gestation

Transvaginal ultrasound of a normal pregnancy at 12 weeks of gestation

 


Advanced Fertility Center of Chicago

        Gurnee, IL                        Crystal Lake, IL
  (847) 662-1818                                 (815) 356-1818


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