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Embryonic Demise
- Most common cause = chromosomal abnormality leading to arrested development
- Diagnosis is made by:
- CRL > 5 mm but no cardiac activity
- MSD >/= 8 mm but no yolk sac
- MSD >/= 16 mm but no embryo
- Embryo seen but no yolk sac
- No cardiac activity in embryo seen by transabdominal ultrasound (need to confirm with transvaginal ultrasound if early IUP)
Reference:
Weissleder, Wittenberg, Harisinghani, Chen. Primer of diagnostic imaging. 4th edition, 2007
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