Fig. 4
a Histopathological images showing large, hydropic villi, cistern formation and circumferential trophoblastic hyperplasia of the cystic mass, adjacent to normal-sized villi of the placentas (hematoxylin-eosin 40×). b Focally positive p57KIP2 immunostaining of the mole (100×). c FISH for the X and Y chromosomes on the slide of molar tissue displaying mostly XXY