In some cases, a healthy twin and a parasitic twin are born.

Fetus in fetu sometimes is interpreted as a special case of parasitic twin, but may be a distinct entity.

Sometimes the parasitic twin becomes an almost indistinguishable part of the other, and sometimes this needs to be treated medically.

She could drag herself around, although impeded by the trailing parasitic twin.

Doctors are to attempt to remove a conjoined parasitic twin from a nine-month old baby.

In the past, the use of terminology when describing parasitic twins has been somewhat inconsistent.

By definition a parasitic twin is joined to another twin in a certain anatomical location or position on the developed twin's body.

However, it is known that the underdeveloped twin is a parasitic twin.

During surgery the goal is to try to remove the parasitic twin.

The acardiac twin is a parasitic twin that fails to develop a head, arms and a heart.