Okay. The thing that bugs me about them is they resemble something called a hydatidiform mole (a type of trophoblast) -- a type of false pregnancy where an unfertilized or even a defective ovum (and sometimes a twin from a viable fetus) goes into a weird growth pattern and you wind up with a mass that often bears some humanoid features, sort of an eye, or fingers, hair . . . but is just a grotesque mass of mixed-up cellular growth.
Sadly, the process mimics pregnancy and I've known several women (and their mates) who went through the heartbreak of the process, looking forward to a baby and then . . . finding that.
I suspect, since they're named, that that's what they're intended to be, and thinking about someone who's had this happen to them stumbling across it . . .