
Squamous cell cancer involves cancerous changes to the cells of the middle portion of the epidermal skin layer. It is a malignant tumor, and is more aggressive than basal cell cancer, but is still slow-growing and unlikely to spread (metastasize) to other locations, such as internal organs.
Review Date: 12/23/2010
Reviewed By: Harvey Simon, MD, Editor-in-Chief, Associate Professor of Medicine,
Harvard Medical School; Physician, Massachusetts General Hospital.

