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PET images of glucose metabolism in various types of cancers. Study illustrates that increased glycolysis is a common property of cancer, independent of organ of origin. In breast example, a 6-mm lesion is just behind a 10-mm one. Mammogram was normal, and tumor had high expression of HER-2/neu oncogene. Arrows point to some tumors (32). Reprinted with permission from ref. 31.
