UKMLA PLAB AMC USMLE Prometric MCQ

a) The double-decidual sign is usually identified by the fourth week of menstrual age
b) it should be possible to identify a normal intrauterine gestational sac when the b-HCG level is 2000 mIU/mL
c) an embryo with a CRL of 5mm with absent cardiac activity is highly indicative of embryonic demise
d) decidual cysts typically abut the endometrial canal
e) in ectopic pregnancy an extrauterine fetus is detected in over 10% of patients with ectopic pregnancies