On transvaginal scan, there is an oblong or elongated structure noted in the left adnexa representing fallopian tube with an ectopic pregnancy noted at the end of the tube appearing as a donut like structure with central anechoic gestational sac. The echogenic contents within the expanded fallopian tube are representing hematoma within the tube. Free fluid with mobile echoes noted in the cul-de-sac.
Anechoic to heteroechoic collection seen within the endometrial cavity with decidual cast surrounding it giving a pseudogestational sac appearance.