1 MCQs in OBG for NEET PG
A 28-year-old primigravida presents at 5.5 weeks of gestation (by LMP) with mild vaginal spotting. Transvaginal ultrasound shows a gestational sac measuring 8 mm with a structure marked **C** visible inside it. β-hCG is 3200 IU/L. What is the clinical significance of the structure marked **C** in confirming the diagnosis of intrauterine pregnancy at this gestational age?
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