Decidual space is obliterated by:: (A) 10 th week, (B) 12 th week, (C) 18 that week, (D) 16 th week
Answer is D. 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.