The 50-day aborted fetus may be able to be seen as a gestational sac with fetal buds inside, or you may only see a blood clot and no specific tissue. After 50 days of pregnancy, if the abortion is spontaneous or induced, sometimes you can observe the sac coming out of the uterine orifice with fetal buds inside, and if you put the expelled tissue into water, you can see it floating on the surface of the water, and you are able to observe the chorionic tissue more clearly. However, most of the time only blood clots can be seen, and these tissues are mixed in and cannot be seen. Whether it is natural abortion or artificial abortion, you need to review the ultrasound one week after the expulsion of the gestational sac, to observe the situation in the uterine cavity, if the ultrasound suggests that there are residual tissues in the uterine cavity, you need to further scrape the uterus for treatment.