NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,812 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

COG
A group of clinical cancer research organizations that get support from the National Cancer Institute to study childhood cancers. The main goal of COG is to conduct clinical trials of new treatments for childhood and adolescent cancers at cancer centers in the United States, Canada, Europe, and Australia. Also called Children's Oncology Group.