Beta hCG positive patient underwent a scan for determination of gestational age.
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No fetal pole is present within this 25 mm intrauterine gestational sac. This is in keeping with an anembryonic pregnancy (older term - "blighted ovum"). The irregular shape of the gestational sac is also regarded as a poor prognostic factor.
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This case shows a typical anembryonic gestation meeting the size criteria, with absence of fetal pole and irregular sac.