The Manitou -- sounds like a keeper!
I happened to come across a movie in Netflix from 1978 called The Manitou and I thought the description was pretty funny. This just doesn't sound like a good movie...
When Karen (Susan Strasberg) tries to have a tumor removed, she discovers it's actually the deformed fetus of an ancient Native American shaman ready to be reincarnated. Soon, the evil spirit bursts forth, and Karen turns to a sham psychic (Tony Curtis) and a contemporary medicine man (Michael Ansara) for a showdown with the murderous creature. Stella Stevens, Burgess Meredith and Jon Cedar co-star in this campy chiller.