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Related to cystic mole: hydatidiform mole
hy·da·tid·i·form mole, hydatid mole [MIM*231090]
a vesicular or polycystic mass resulting from the proliferation of the trophoblast, with hydropic degeneration and avascularity of the chorionic villi; the abnormal tissue typically results from expression of paternally derived chromosomes and a loss of maternal chromosomes.
See hydatid mole.