Crown rump length (CRL)

Case contributed by Frank Gaillard
Diagnosis not applicable

Patient Data

Age: 5 weeks gestation
ultrasound

Early pregnancy with a  a yolk sac and a foetal pole of CRL corresponding to 5 weeks and 5 days.

Case Discussion

Crown-rump length (CRL) is the most accurate estimation of gestational age in early pregnancy, especially after 6 weeks.

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