NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 8,123 terms related to cancer and medicine.

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talc
A mineral, usually used in a powdered form. In cancer treatment, sterile talc is used to prevent pleural effusions (an abnormal collection of fluid in the space between the lungs and the chest wall). Talc is inserted into the space, causing it to close up, so fluid cannot collect there. Also called sterile talc powder.