Although not incredibly common in snakes, it is possible for your
snake to form cancer. It is very rare that you would find
a tumor on a living snake, most often they are found when
an autopsy is performed. Obviously at this point it is too
late to treat the snake. Sometimes though you will see the
tumor causing a bulge on the surface of your snakes skin.
It is important to always monitor the physical
condition of your snake because that way you will have a much
better chance of catching a health issue early on. The best
way to prevent the cancer or tumor from getting out of hand
is to regularly check the surface of your snake for any abnormalities.
This is good practice not only to check for cancer but for
a variety of other diseases. Most diseases that snakes can
form are not dangerous to its longterm health if they are
caught early on.