NCI Dictionary of Cancer Terms

  • Resize font
  • Print
  • Email
  • Facebook
  • Twitter
  • Google+
  • Pinterest

The NCI Dictionary of Cancer Terms features 7,846 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.

stage I nonmelanoma skin cancer
(… non-MEH-luh-NOH-muh skin KAN-ser)
The tumor is not larger than 2 centimeters at its widest point and may have one of the following high-risk features: (1) is thicker than 2 millimeters; (2) has spread into the lower layer of the dermis or into the layer of fat below the skin; (3) has grown and spread along nerve pathways; (4) began on an ear or on a lip that has hair on it; or (5) has cells that look very different from normal cells under a microscope.

EnlargeStage I nonmelanoma skin cancer; drawing shows a tumor in the epidermis (outer layer of the skin) that is no more than 2 centimeters wide. Also shown are the dermis (inner layer of the skin) and the subcutaneous tissue below the dermis.

Stage I nonmelanoma skin cancer. The tumor is no more than 2 centimeters.