I understand that bone cancer is often not the original source of cancer; which cancers metastasis goes to the bones. My sister in law is having severe pain in upper thigh, the x-ray and MRI she had in the ER and when her doctor talked to her this morning, he asked her about family history of cancer. A biopsy is going to be scheduled soon. I would just like a little heads up since I will most likely be with her when she gets the results....so I can be prepared to ask somewhat intelligent questions. Thanks for your input.