Sonographic and Power Doppler Evaluation of an Invasive Mole Located in a Cesarean Scar Pregnancy.

We report on the sonographic evaluation, clinical management, and pathologic characteristics of an unusual case of a partial molar cesarean scar pregnancy that evolved into an invasive mole. Initially, this pregnancy was misdiagnosed as a simple cesarean scar pregnancy. After treatment with local and systemic methotrexate (MTX), 2‐dimensional sonography and a power Doppler evaluation together with serum β‐human chorionic gonadotropin (β‐hCG) test results were suggestive of a molar pregnancy; a complementary 3‐dimensional (3D) sonographic evaluation was also performed to better identify and localize the blood supply to the cesarean scar pregnancy and to measure the volume of the ectopic mass. To our knowledge, the sonographic features of this entity have not been reported previously.