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A 42-year-old female asked:

Just had an ultrasound scan at 22.2 weeks and the head circumference is 196mm and the femur is 34mm should i be worried or are these normal?

1 doctor answer3 doctors weighed in
Dr. Jeff Livingston
Obstetrics and Gynecology 22 years experience
Specific details: To answer this one would need to look at graph mapping out the normal range of a the head circumference and femur length at this gestational age. No one can do that in their head. The best thing to do is to contact the doctor who ordered the test and ask if these measurements fall within the normal range.

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Last updated Sep 28, 2016

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