<prompt> All are signs features of ectopic pregnancy on USG exceptPseudo sacHyperechoic rimAdenexal massEchogenic mass with multicystic spaces within endometrial cavity  <response>: Echogenic mass with multicystic spaces within the endometrial cavity is seen in gestational trophoblastic diseases, e.g. Hydatifonn male.Pseudosac, Adenexal mass and Doughnut sign are seen in ectopic pregnancy.An ectopic pregnancy classically has a thick hyperechoic rim with a central hypoechoic region. 