Partial hydatidiform mole
Pregnant female with history of spotting
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Ultrasound images show multiple randomly distributed cysts of varying sizes in the upper portion of the placenta with presence of a fetus is suggestive of a partial mole.
Imaging differentials are complete mole in one of twin pregnancy and mutiple placental lakes. Placental lakes show swirling flow on close observation. However, differentiation from complete mole in one of a twin can not be done reliably.
Such partial moles usually result from diandry whereas digyny present with aymmetrical IUGR and a normal placenta.