What is Cancer
Cancer is a class of diseases characterized by ‘out of control’ cell
growth.The word cancer means “CRAB”,thus reflecting the true character of
cancer since it sticks to the part stubbornly like a ‘CRAB’,therefore it is a
mass of tissue formed as a result of ABNORMAL,EXCESSIVE,UNCOORDINATED,AUTONOMO
US and PURPOSELESS proliferation of cells.
When tissue sucessfully spreads the other
parts of body and grows,destroying the healthy tissues it is said to be
metastasized and process is called “METASTASIS”.
WHAT CAUSES CANCER:
Cancer is ultimately growth of cells that uncontrollably grow.Program
med cell death is called as “APOPTOSIS”and when it breaks,cancer begins to
form.It also occurs when cell genes mutate make the cell unable to correct
DNA damage and unable to commit suicide.It is a result of mutations that
inhibit ‘ONCOGENE’ and ‘TUMOUR SUPRESSOR GENE FXN’leading to uncontrollable
cell growth.Cancer also occur as a result of ‘GENETIC PREDISPOSITION’that is
inherited from family members.There are class of substances that are
responsible for damaging DNA are known to be “CARCINOGENS“.When body get
exposed to these carcinogens free radicals are formed,these radicals damage
cells and affect their ability to fxn normally.
RISK FACTORS
AGE:It is the important risk factor that causes cancer.as age i
increases no. of possible cancer causing mutation in our DNA.
SEVERAL VIRUSES:HUMAN PAPILLOMA virus causes (CERVICAL CANCER),
HEPATITIS-B and C causes (LIVER CANCER),EPSTEIN BARR VIRUS cause (CHILDHOOD
CANCER),HIV (weakens immune system and decrease body ability to fight against
infection and increase chance of cancer).
SYMPTOMS OF CANCER:
It depends upon LOCATION and SIZE of tumour.
SKIN CANCER (MELANOMA) can be noticed by CHANGE IN WART or MOLE ON SKIN.
ORAL CANCER -WHITE PATCHES are found inside the mouth or WHITE SPOTS on tongue
IN LIVER-cancer interfere liver fxn and causes YELLOWING OF SKIN and EYES
called “JAUNDICE”.
COLON CANCER-CONSTIPATION,DIARROHEAand CHANGES IN STOOL SIZE are commonly seen
BLADDER OR PROSTATE CANCER-change in BLADDER FXN or FREQUENT or INFREQUENT
URINATION.
OTHER SYMPTOMS-FEVER.FATIQUE,EXCESSIVE SWEATING,ANAEMIA and UNEXPLAINED
WEIGHT LOSS.
LUNG CANCER-COUGHING,SHORTNESS OF BREATH and HOARSENESS are common.
BRAIN-when affects the brain it causes VERTIGO,HEADACHE and SEIZURES are seen.
IN addition to these ENLARGED LYMPH NODES are common and likely
to be present as earlier symptom.
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