Unlikely...: If your only symptom is "back cracking", then it is unlikely that the cause is cancer, especially if you have no personal history of cancer. Pain, unexplained weight loss, fatigue, and other symptoms in association with back problems would be more concerning. If you are worried about cancer and/or back trouble, please see a primary care doc and give all of your symptoms. Hope that this helps.
Answered 3/3/2014
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