double bleb sign double bleb sign is a sonographic feature where there is visualization of a gestational sac containing a yolk sac and amniotic sac giving an appearance of two small bubbles 2. The embryonic disc is located between the two bubbles The “double-bleb sign” is a transient appearance that can be seen in the gestational sac. It is produced by the yolk sac and probably the amniotic cavity.The trilaminar.. 2014. 8. 22. 이전 1 다음
