Lung Cancer - Symptoms & Treatment:
Cancer
is a class of diseases characterized by out of control cell growth. Lung cancer
occurs when this uncontrolled cell growth begins in one or both lungs. The
lungs are two large spongy organs located inside the chest cavity. Air is
breathed into lung cancer the trachea and moves down two tubes called bronchi,
each going to a lung. Lung cancer occurs most often in adults between the ages
of 40 and 70 who have smoked cigarettes for at least 20 years.
Over
1,400 Victorians are diagnosed with every year. Only about 2% of those
diagnosed with lung cancer that has spread to other areas of the body are alive
five years after the diagnosis, although the survival rates are diagnosed at a
very early stage are higher with approximately 49% surviving for five years or
longer.
There
are different types of lung cancer, depending on which cells are affected. The
two main types are:
1.
Small cell carcinoma
around 15 per cent is small cell carcinomas. This type of cancer spreads early and shows few early symptoms.
around 15 per cent is small cell carcinomas. This type of cancer spreads early and shows few early symptoms.
2.
Non-small cell carcinoma
these cancers affect the cells that line the main bronchi.
these cancers affect the cells that line the main bronchi.
Some
lung tumors are metastatic from cancers elsewhere in the body. The lungs are a
common site for metastasis. Since lung cancer tends to spread or metastasize
very early in its course, it is a very life-threatening cancer and one of the
most difficult cancers to treat. While lung cancer can spread to any organ in
the body.
Symptoms
are varied depending upon where and how widespread the tumor is. Warning signs
of lung cancer are not always present or easy to identify. Lung cancer symptoms
may take years before appearing, usually after the disease is in an advanced
stage.
Below
are the following symptoms of lung cancer including:
1.
Pain in the chest shoulder or back from coughing
2.
A cough that does not go away or gets worse over time
3.
Breathlessness and swallowing
4.
Recurring pneumonia or chest infections
5.
Wheezing or hoarseness may signal blockage
6.
Unexplained weight loss
Lung
cancer is categorized into stages according to its spread. This helps the
doctors to decide on appropriate treatments. The treatments also depend on the
type of cancer, age, health status and additional personal characteristics. As
there is usually no single treatment for cancer, patients often receive a
combination of therapies and palliative care. More than one type of therapy may
be prescribed.
Although
the diagnostic techniques provided important information, extracting cancer
cells and looking at them under a microscope is the only absolute way to
diagnose lung cancer. This procedure is called a biopsy. If the biopsy confirms
lung cancer, a pathologist will determine whether it is non-small cell or small
cell.
Small
cell lung cancer has two stages which are:
1.
In the limited stage, the tumor exists in one lung and in nearby lymph nodes.
2.
In the extensive stage, the tumor has infected the other lung as well as other
organs in the body.
For
non-small cell lung cancer, these stages are labeled from I to IV. The lower
numbers indicate earlier stages where the cancer has spread less:
1.
Stage I is when the tumor is found only in one lung and in no lymph nodes.
2.
Stage II is when the cancer has spread to the lymph nodes surrounding the
infected lung.
3.
Stage III is when the cancer has spread to lymph nodes around the trachea,
chest wall and diaphragm on the same side as the infected lung.
4.
Stage IV is when the cancer has spread to lymph nodes on the other lung or in
the neck.
5.
Stage IV is when the cancer has spread throughout the rest of the body and
other parts of the lungs.
As
with most cancers, the results are best if the cancer is diagnosed in its
earliest stages. However, some lung cancers aren't diagnosed until they are
quite advanced. Treatment may then be limited to easing the symptoms. Treatment
decisions depend on whether SCLC or NSCLC. Treatment options include:
1.
Chemotherapy is an anti cancer drugs are given to stop cancer cells from
multiplying. This treatment is most effective for small cell carcinoma.
2.
Surgery to remove the affected part of the lung or an entire lung. This offers
the best chance of cure if the cancer has not spread beyond the lungs.
3.
Radiotherapy use of x-rays to target and kill cancer cells. It may be used
against some early stage lung cancers and to stop cancer in the lymph nodes
from spreading further.
4.
Targeted therapy is use of small molecules, often in tablet form that may be
used after chemotherapy.
5.
Clinical trials are a participation in a clinical trial that investigates the
safety and effectiveness of novel drugs may be offered.
Cancers
that are closely linked to certain behaviors are the easiest to prevent. If you
are a current tobacco user, quitting can still greatly reduce your chances of
getting cancer. The most important preventive measure you can take is to quit
smoking. Many products such as nicotine gum, nicotine sprays, and nicotine
inhalers have been successfully used to help people trying to quit smoking.
There
are common causes of lung cancer:
1.
A person who smokes more than one pack of cigarettes per day has a risk 20-25
times greater than someone who has never smoked.
2.
Cigar and pipe smoking increases the risk of lung cancer but not as much as
smoking cigarettes.
3.
Asbestos fibers are silicate fibers that can persist for a lifetime in lung
tissue following exposure to asbestos. The workplace is a common source of
exposure to asbestos fibers.
4.
Radon gas is a natural chemically inert gas that is a natural decay product of
uranium. With an estimated 12% deaths attributable to radon gas.
5.
Air pollution from vehicles, industry, and power plants can raise the
likelihood of developing lung cancer in exposed individuals
Screening
techniques are designed to find cancer at the earliest stage so that the most
treatment options are available. This cancer are detected in the late stages of
the disease after they have spread and are harder to treat. Possible lung
cancer screening tests include analysis of sputum cells, fiber optic
examination of bronchial passages and low-dose spiral CT scans.
Cancer
and cancer treatments can make a person feel too tired to exercise. However,
studies show that, physical activity can boost the energy levels of a person
who has cancer.
Regular
exercise improves functioning of the immune system and may increase survival
rates in some cases. Aim for five to 20 minutes of moderate intensity exercise
on most days of the week. But do not exercise without your doctor's knowledge
and support because inappropriate exercise may be harmful.
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