8/16/2019 Cancers Are a Large Family of Diseases That Involve
Abnormal
1/1
. Cancers are a large family of diseases that involve abnormal
cell growth with the potential to invade
or spread to other parts of the body.[1][2] They form a
subset of neoplasms. A neoplasm or tumor is a
group of cells that have undergone unregulated growth, and will
often form a mass or lump, but may
be distributed diffusely.
hen cancer begins, it invariably produces no symptoms. !igns and
symptoms only appear as the
mass continues to grow or ulcerates. The findings
that result depend on the type and location of the
cancer. "ew symptoms are specific, with many of them
also fre#uently occurring in individuals who
have other conditions. Cancer is the new $great imitator $.
Thus, it is not uncommon for people
diagnosed with cancer to have been treated for other diseases,
which were assumed to be causing
their symptoms.[
The great ma%ority of cancers, some &'(&)* of cases, are
due to environmental factors. The
remaining )(1'* are due toinherited
genetics.[+] Environmental , as used by cancer
researchers,
means any cause that is not inherited genetically, such as
lifestyle, economic and behavioral factors,
and not merely pollution.[2] Common environmental factors
that contribute to cancer death
include tobacco -2)('*/, diet and obesity -'()*/,
infections -1)(2'*/, radiation -both ioni0ing
and nonioni0ing, up to 1'*/, stress, lac of physical activity,
and environmental pollutants.[+]
3t is nearly impossible to prove what caused a cancer in any
individual, because most cancers have
multiple possible causes. "or e4ample, if a person who uses
tobacco heavily develops lung cancer,
then it was probably caused by the tobacco use, but since
everyone has a small chance of
developing lung cancer as a result of air pollution or
radiation, then there is a small chance that thecancer developed
because of air pollution or radiation. 54cepting the rare
transmissions that occur
with pregnancies and only a marginal few organ donors, cancer is
generally not a transmissible
disease.
6any treatment options for cancer e4ist, with the primary
ones
including surgery, chemotherapy, radiation
therapy, hormonal therapy, targeted
therapy and palliative care. hich treatments are used
depends on the type, location, and grade of
the cancer as well as the person7s health and wishes.
The treatment intent may be curative or not
curative.
https://en.wikipedia.org/wiki/Cell_growthhttps://en.wikipedia.org/wiki/Cancer#cite_note-WHO2014-1https://en.wikipedia.org/wiki/Cancer#cite_note-WHO2014-1https://en.wikipedia.org/wiki/Cancer#cite_note-NCI2014-2https://en.wikipedia.org/wiki/Neoplasmshttps://en.wikipedia.org/wiki/Neoplasmshttps://en.wikipedia.org/wiki/Neoplasmshttps://en.wikipedia.org/wiki/Ulcer_(dermatology)https://en.wikipedia.org/wiki/Non-specific_symptomhttps://en.wikipedia.org/wiki/The_great_imitatorhttps://en.wikipedia.org/wiki/Cancer#cite_note-Card10-24https://en.wikipedia.org/wiki/Environmental_diseasehttps://en.wikipedia.org/wiki/Heredityhttps://en.wikipedia.org/wiki/Heredityhttps://en.wikipedia.org/wiki/Cancer#cite_note-Enviro2008-4https://en.wikipedia.org/wiki/Environment_(biophysical)https://en.wikipedia.org/wiki/Environment_(biophysical)https://en.wikipedia.org/wiki/Heredityhttps://en.wikipedia.org/wiki/Cancer#cite_note-isbn0-387-78192-7-26https://en.wikipedia.org/wiki/Tobaccohttps://en.wikipedia.org/wiki/Obesityhttps://en.wikipedia.org/wiki/Infectionhttps://en.wikipedia.org/wiki/Radiationhttps://en.wikipedia.org/wiki/Physical_exercisehttps://en.wikipedia.org/wiki/Environmental_pollutantshttps://en.wikipedia.org/wiki/Cancer#cite_note-Enviro2008-4https://en.wikipedia.org/wiki/Transmission_(medicine)https://en.wikipedia.org/wiki/Transmission_(medicine)https://en.wikipedia.org/wiki/Transmission_(medicine)https://en.wikipedia.org/wiki/Surgeryhttps://en.wikipedia.org/wiki/Chemotherapyhttps://en.wikipedia.org/wiki/Radiation_therapyhttps://en.wikipedia.org/wiki/Hormonal_therapy_(oncology)https://en.wikipedia.org/wiki/Targeted_therapyhttps://en.wikipedia.org/wiki/Targeted_therapyhttps://en.wikipedia.org/wiki/Palliative_carehttps://en.wikipedia.org/wiki/Therapy#By_treatment_intenthttps://en.wikipedia.org/wiki/Cancer#cite_note-WHO2014-1https://en.wikipedia.org/wiki/Cancer#cite_note-NCI2014-2https://en.wikipedia.org/wiki/Neoplasmshttps://en.wikipedia.org/wiki/Ulcer_(dermatology)https://en.wikipedia.org/wiki/Non-specific_symptomhttps://en.wikipedia.org/wiki/The_great_imitatorhttps://en.wikipedia.org/wiki/Cancer#cite_note-Card10-24https://en.wikipedia.org/wiki/Environmental_diseasehttps://en.wikipedia.org/wiki/Heredityhttps://en.wikipedia.org/wiki/Cancer#cite_note-Enviro2008-4https://en.wikipedia.org/wiki/Environment_(biophysical)https://en.wikipedia.org/wiki/Heredityhttps://en.wikipedia.org/wiki/Cancer#cite_note-isbn0-387-78192-7-26https://en.wikipedia.org/wiki/Tobaccohttps://en.wikipedia.org/wiki/Obesityhttps://en.wikipedia.org/wiki/Infectionhttps://en.wikipedia.org/wiki/Radiationhttps://en.wikipedia.org/wiki/Physical_exercisehttps://en.wikipedia.org/wiki/Environmental_pollutantshttps://en.wikipedia.org/wiki/Cancer#cite_note-Enviro2008-4https://en.wikipedia.org/wiki/Transmission_(medicine)https://en.wikipedia.org/wiki/Transmission_(medicine)https://en.wikipedia.org/wiki/Surgeryhttps://en.wikipedia.org/wiki/Chemotherapyhttps://en.wikipedia.org/wiki/Radiation_therapyhttps://en.wikipedia.org/wiki/Hormonal_therapy_(oncology)https://en.wikipedia.org/wiki/Targeted_therapyhttps://en.wikipedia.org/wiki/Targeted_therapyhttps://en.wikipedia.org/wiki/Palliative_carehttps://en.wikipedia.org/wiki/Therapy#By_treatment_intenthttps://en.wikipedia.org/wiki/Cell_growth
