Gestational Trophoblastic Disease

Question No. 11. The Answer is: (B) False.

Discussion: The terms percreta and increta refer to specific subtypes of placenta accreta which involves the adherence of placental tissue to the uterine wall. In placenta increta, the placental tissue grows into the myometrium, while placenta increta refers to growth completely through the myometrial wall. While the presence of trophoblastic tissue growing into the myometrium may appear invasive, it is a different process than what occurs in an invasive mole. An invasive mole is likely to show vascular space invasion which would not be present in placenta accreta.

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