Decidual space is obliterated by:
Decidual space is the space between decidua capsularis and parietalis seen in early pregnancy because the gestational sac does not fill the uterine cavity. By 14-16 weeks the gestational sacred has enlarged to fill the uterine cavity completely by 4 th month (16 weeks). Ref: Datta Observe 9e pg 22.
10 th week
12 th week
18 that week
16 th week
General obstetrics