Radiology This is a sonogram demonstrating CRL of an 8 weeks fetus. The arrow in the field points to which of the following? A Blighted ovum B Pseudo-gestational sac C Yolk sac D Gestational sac 💡 Explanation This is a sonogram demonstrating CRL of an 8 weeks fetus. The arrow in the field points to which of the following? ✓ Correct Answer: C. Yolk sac