bone mass - Do i have cancer that has metastasized?

Hi, The concern that it may represent a metastasis is valid. Considering your age, cancers in the bone are more likely due to metastasis rather than a primary bone cancer. You made no mention of gender, at any rate the cancers that have a predisposition to have bone disease would include: Primary Cancer Percent of metastatic cases with bone metastasis Breast 65-75% Prostate 68% Lung 30-40% Thyroid 30-40% Renal Cell 30-40% I’m rewriting the figures here as I am uncertain what the table will look like in the post. Breast cancer – 65-75% of cases of metastatic cases would have bone metastasis, Prostate – 68%, Lung, Thyroid and Renal Cell – 30-40%. The first 3 cancers are fairly common and hence your doctor would likely investigate these areas. The prognosis would depend largely on the primary : for lung cancer it may be on the lowest end of 3 months, for breast it could be on the high end of 19 months. Looking only at age to estimate the incidence of getting cancer, using ACS 2008 data, about 1.4 million new cases of cancer are expected. About 60% of these 1.4 million would be at least age 65. Of course, a biopsy is needed to ascertain it is cancer.

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