True about ectopic pregnancy:
If TVS reveals an intrauterine gestational sac,the diagnosis of ectopic can usually be ruled out .sometimes a psuedosac may be seen in an ectopic due to bleeding produced by separation of a decidual cast.(refer pgno:159 sheila 2 nd edition)
Transvaginal USG-first imaging test of choice
Not Associated with decidual reaction
Doppler is of no significance
In ectopic interstitial ring sign is seen
General obstetrics