A missed miscarriage, also known as a silent miscarriage or a missed abortion is when a mother loses the fetus or the fetus dies, however, the placenta and embryonic tissues still remain in the fetus and are not expelled out of the system. Typically, no symptoms are exhibited as a result of a silent miscarriage as the body fails to recognize that a miscarriage has happened. Missed miscarriages are usually diagnosed during post-conception follow-ups.