2cm Lump on scalp. Obviously concerned.

My fiance, living in Ecuador, noticed a bump on the side of her head about 3 weeks ago. Hard and painless. She went to the ER and received an xray. This is the translated report from the radiologist: "The left parietal region is explored observing: Below the plane of the subcutaneous cellular tissue and in front of the external table, a well-defined hypoechogenic image of regular borders, avascular, is measured 2.1cm x 2.1cm x 0.5cm findings suggest as the first possibility lipoma at this level. He does not observe other collections or focal lesions occupying this space. Does not observe free liquid." Now she tells me the bump is moving closer to her face, out of her hairline. Xrays can be seen here: https://goo.gl/photos/wi9EavnuhghSS54J7 She is 45. Has a history of Stage 3C ovarian cancer, treated with chemo, radiation and hysterectomy 18 months ago so she is obviously concerned.