NCCN Guidelines for Patients
Part 9: Dictionary
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Whether or not the tumor’s top
skin layer is present and intact (not
ulcerated) or is broken or missing
A test that uses sound waves to take
pictures of the inside of the body.
Ultraviolet (UV) radiation
Invisible light energy that comes from
the sun, sun lamps, and tanning beds.
UV radiation has a wavelength shorter
than visible light but longer than
Ultraviolet-A (UVA) radiation
Long-wave invisible light energy that
comes from the sun, sun lamps, and
Ultraviolet-B (UVB) radiation
Short-wave invisible light energy that
comes from the sun.
Changing the rating of the extent of
cancer in the body from a lower (less
extensive) stage to a higher (more
A treatment used to help the immune
system (the body’s natural defense
against disease) prevent a disease.
A drug that treats melanoma by
targeting a certain abnormal change
in the instructions in cells for making
and controlling cells.
Vertical growth phase
The direction of tumor growth is down
into the skin.
Soft-tissue internal organs such as the
intestines that digest food.
White blood cells
A type of blood cell that fights disease
Surgical treatment that removes the
whole tumor and some surrounding
Widespread metastatic disease
Cancer that has spread from the first
tumor to many distant sites in the
An inability of the skin to repair
damage from ultraviolet light.
Use of small amounts of radiation
to make pictures of organs and
structures inside the body.