My sister has a large lump on the top of her head, about 2 inches from her hairline. There has been no physical injury to cause this. She is 32 years old. Has had medical problems like strokes. This lump just grew in the past month. The doctors say her skull is separating but tests are still awaiting results. Also, her blood count, they say average is 30, but hers was 580. I don't understand.