“…18 F-FDG PET has a high accuracy for staging non-small cell lung cancer, gastrointestinal tract cancers (i.e., esophageal and colorectal cancer), malignant lymphoma, melanoma, thyroid cancer, and head and neck cancer. Depending on the tumor subtype, changes in therapeutic management of between 15% and 40% based on PETor PET/ CT findings have been described (2,4,5,15,16). Some tumors, such as prostate cancer or neuroendocrine cancer, do not exhibit increased glucose use, leading to false-negative findings on 18 F-FDG PET.…”