Which of the following sonographic finding confirms intra uterine pregnancy
Normal gestational sac implants eccentrically in the endometrium.
Anechoic center surrounded by single echogenic rim = intra-decidual sign.
Two concentric rings echogenic surrounding sac = Double decidual sign.
An echogenic rim along one side of decidua.
Two concentric echogenic rings surrounding the sac.
A sac positioned eccentrically within endometrium.
All of the above.