On a
factual note, while studying
pathology I have come across photos of
ovarectomies where the cancerous
ovary is
dissected to reveal
teeth,
hair,
nail and sometimes
brain tissue.
Gross but
true. Cancerous cells are normally
undifferentiated, meaning that they assume the most
basic shape and
function, but if differentiation is
randomly triggered the cell may
mature into
skin,
tooth or any other type of cell in the body
regardless of
anatomical location. Remember that every single cell in the body contains all the
information that
describes the
individual and may thus differentiate into any
tissue depending on its physical location and several other factors.
This condition is specifically referred to as teratoma.