NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,777 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.
- punch biopsy
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A procedure in
which a small round piece of tissue about the size of a
pencil eraser is removed using a sharp, hollow, circular
instrument. The tissue is then checked under a microscope
for signs of disease. A punch biopsy may be used to check
for certain types of cancer, including skin, vulvar, and
cervical cancer. It may also be used to check for certain
skin conditions and changes that may lead to