Placental teratoma

Last revised by Jeremy Jones on 20 Sep 2021

A placental teratoma is a very rare placental tumor.


A placental teratoma is benign and almost never associated with congenital deformities in the fetus.

Radiographic features

Antenatal ultrasound

May show a heterogeneous mass at the placental margin. Hyperechoic foci consistent with fat may be present 1. A normal fetus is often seen in separation.

There is usually a lack of structural organization and lack of large vessels entering the tumor 4.

Differential diagnosis


See also

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