See below:: Cancers grow locally and compress and invade surrounding tissues. These cause a lump or swelling. Cancers ulcerate and cause bleeding, including bleeding into body cavities. Cancers spread to distant organs and cause organ failure. Tumors may produce hormones and upset metabolism. See this site for more. http://www.mayoclinic.com/health/cancer/ds01076/dsection=symptoms.
Answered 12/22/2013
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