Double bleb sign in USg are depictive of:: (A) Intrauterine two gestations sac, (B) Amniotic sac and yolk sac, (C) Ectopic pregnancy, (D) Heterotopic pregnancy
Answer is B. Double bleb sign : Visualization of gestational sac containing a yolk sac and amniotic sac giving an appearance of two small bubbles . Feature of an intrauterine pregnancy. Distinguishes a pregnancy from a pseudogestational sac or decidual cast cyst. Ref:Williams 24e pg 170.