Pleural mesothelioma
Pleural mesothelioma is
a cancer that develops in the pleura, the protective membrane of the lungs and
the chest cavity. It is caused by exposure to asbestos and is the most common
type of mesothelioma. Symptoms of pleural mesothelioma may include dry cough,
shortness of breath, and chest pain.
What is pleural mesothelioma?
Pleural mesothelioma is
a rare malignant cancer. Nearly 75% of diagnosed mesothelioma cases are formed
in the pleura, making it the most common of the four types.
The cause of pleural
mesothelioma is exposure to asbestos fibers, which are inhaled into the lungs.
Mesothelioma usually takes 20 to 50 years to develop after the first exposure
to asbestos. Because of this latency period, the disease usually affects people
over 75 years of age.
The average life
expectancy of mesothelioma of the pleura is often less than 18 months, but it
depends on many factors.
Although mesothelioma
can not be cured, some patients live much longer with the treatments. The
combination of several treatments, such as surgery, chemotherapy and
radiotherapy, has helped some people to live for years. Clinical trials provide
access to new treatments such as immunotherapy.
Facts about pleural mesothelioma
• forms on soft tissues
covering the lungs
• Symptoms: shortness
of breath, chest pain, dry cough and tiredness
• Diagnostic tools:
imaging scanners and tissue biopsies
• Treatments:
chemotherapy, surgery, radiotherapy, immunotherapy and experimental therapies
• Life expectancy:
about 40% live at least one year
What are the causes of pleural mesothelioma?
Asbestos causes pleural
mesothelioma. After inhaling the needle-shaped fibers of the mineral, they tend
to lodge in the lungs and gradually migrate into the mucosa of the pleura.
Over a long period,
these fibers cause irritation, chronic inflammation and genetic changes that
make the cells cancerous.
These cancer cells grow
rapidly and uncontrollably, threatening the surrounding organs.
Two layers make up the
mucosa of the pleura. The outer layer covers the entire inside of the thoracic
cavity (inside the ribs) and the inner layer covers the lungs.
A malignant tumor can
develop on one or the other layer and spread quickly to the other layer. As
tumors develop on the surface of the pleura, they develop to form a mass around
the affected lung. They also cause pleural fluid accumulation in the chest
cavity.
The combination of the
tumor mass on the lung and pleural fluid collection prevents the expansion of the
lungs, resulting in breathing difficulties.
Symptoms of pleural mesothelioma
For many people, the
symptoms of mesothelioma are not noticeable until the cancer is advanced.
• Shortness of breath
• chest pain or painful
breathing
• persistent dry or
rough cough
• Coughing blood
• difficulty swallowing
• Pain in the lower
back or ribs
• Unexplained weight
loss and fatigue
• Swelling of the face
or arms
• Night sweats or fever
• bumps under the skin
on the chest
Patients rarely mention
weight loss and fatigue during their first visit to the doctor. These symptoms
may appear if the cancer is advanced. Some patients develop swelling of the
face or arms, back pain or nerve pain.
Options for treatment of pleural mesothelioma
The standard treatment
options for pleural mesothelioma may include surgery, radiation and
chemotherapy.
Chemotherapy is the
most common type of pleural treatment. A combination of treatments may be used,
called multimodal therapy, if a patient is diagnosed early. These treatments
can improve symptoms, such as chest pain and breathing difficulties, and
improve survival.
Patients can access
these treatments in the country's main cancer centers specializing in the
treatment of pleural mesothelioma.
Surgery
Pleural mesothelioma
patients diagnosed at an early stage benefit the most from the surgery. The
goal of the surgery is to remove cancer and prevent it from happening again
as long as possible.
The two most common
surgeries for pleural mesothelioma are extrapleural pneumonectomy and
pleurectomy and decortication. A mesothelioma specialist can determine if you
are eligible for surgery and advise you on the most appropriate procedure for
your diagnosis.
Extrapleural
pneumonectomy
A more aggressive the surgical option, extra-pleural pneumonectomy removes the pleura, all the
cancerous lung, the diaphragm and the cardiac sac (pericardium).
Pleurectomy
and decortication
A pleurectomy and a
decortication, or radical pleurectomy, consists in removing the tumors and the
affected pleura (lining of the lung).
Chemotherapy
The most common pleural
mesothelioma treatment is chemotherapy. He uses one or more drugs, usually a
combination of cisplatin or carboplatin and pemetrexed (Alimta), to kill cancer
cells or prevent them from reproducing. Recent advances have improved patients'
response to chemotherapy, but overall success rates remain low.
Radiotherapy
Targeted radiation can
destroy cancer cells and reduce the size of the tumor. Radiation therapy can
not cure mesothelioma of the pleura, but it is an effective way to manage chest
pain. Radiation can also help prevent the recurrence of cancer after surgery.
External radiotherapy
is the most common form of radiotherapy for pleural mesothelioma. The sessions
are quick, painless and take only a few minutes.
Emerging
treatments
New treatments include
immunotherapy, gene therapy and photodynamic therapy to treat pleural
mesothelioma. These treatments are designed to fight cancer more effectively,
while reducing side effects for the patient.
You may be able to receive
an experimental treatment as part of a clinical trial on mesothelioma. Some
patients may be eligible for immunotherapy drugs and other emerging treatments
in compassionate use programs.
Complementary and alternative medicine
Some patients may benefit from the
combination of complementary therapies, such as medical marijuana, dietary
supplements, or acupuncture, with conventional cancer therapy to alleviate the
symptoms and side effects of treatment.
To avoid harmful drug interactions,
always consult your medical team before starting any other drug or treatment.
Diagnose pleural mesothelioma
The process of diagnosing pleural
mesothelioma begins when a doctor evaluates the initial symptoms. Chest pain
and breathing difficulties warrant a chest x-ray revealing fluid build-up or
tumors around the lungs. The patient should be referred to a specialist for
further testing.
Specialists should use advanced imaging
analyzes and tissue biopsies to confirm the diagnosis of pleural mesothelioma.
In addition to identifying cancer, determining the cancer stage and cell type
is critical to creating an effective treatment plan.
A number of conditions may indicate a
history of asbestos exposure and potential diagnosis of mesothelioma, including
pleural plaques, pleural effusions, and pleural thickening.
Pleural
plates
Small areas of thickening on the pleura
are the most common sign of previous exposure to asbestos. Pleural plaques are
not cancerous and do not usually cause symptoms, but they may indicate a high
risk of cancer.
Pleural
effusion
The irritation caused by asbestos fibers
can cause a build-up of fluid between the two layers of the pleura. This
condition, called pleural effusion, is present in many cases of pleural
mesothelioma. A little liquid between the layers of the pleura is healthy.
Excessive pressure on the lungs causes chest pain that worsens when you cough
or take a deep breath.
Pleural
thickening
When large areas of the pleura stiffen
because of scarring, it can become difficult and painful to breathe. Pleural
thickening around both lungs is often a sign of significant exposure to
asbestos. Repeated episodes of pleural effusion can cause thickening of the
pleura as scar tissue accumulates.
Stages of pleural mesothelioma
The determination of pleural
mesothelioma is the way in which doctors determine the progression of cancer in
a patient's body. The stage influences the treatment options that can be used.
The international interest group on
mesothelioma has created the most widely used staging system for pleural
mesothelioma.
Stages 1 and 2, considered as early
stages, indicate localized tumors. Stages 3 and 4, which designate later
stages, classify expanding tumors.
Mesothelioma
Life Expectancy by Stage for Patients Eligible for Surgery
Stage
|
Time
|
Progression
|
Stage 1
|
22.2 months
|
Tumors remain localized in and around the
tissue lining of one lung
|
Stage 2
|
20.0 months
|
Cancer cells are entering nearby lymph nodes
|
Stage 3
|
17.9 months
|
Cancer has spread to nearby tissues and
distant lymph nodes
|
Stage 4
|
14.9 months
|
Cancer has spread to distant organs
|
Stage 4
|
14.9 months
|
Cancer has spread to distant organs
|
Prognosis
For Pleural Mesothelioma
The average prognosis of pleural
mesothelioma, or the course and expected outcome of the disease, is poor for
most patients as it progresses rapidly and is resistant to many existing
treatments.
It is difficult to accurately predict the prognosis
of an individual because this disease is complex. Each person responds
differently to the treatment.
Survival Rate Of Pleural Mesothelioma by Year
Year (s) After Diagnosis
|
Surfvival Rate
|
1 Year
|
73%
|
3 Years
|
23%
|
5 Years
|
12%
|
10 Years
|
4.7%
|
Factors that affect your prognosis
·
Stage:
The most important factor in the prognosis of mesothelioma is the stage of the
disease at the time of diagnosis. Early-stage cancer offers a better chance of
long-term survival than advanced cancer.
·
Cell
Type: The type of mesothelioma tumor cell also greatly
influences the prognosis.
·
Age:
Younger patients tend to live longer.
·
Gender:
Women tend to live longer with the disease than men.
·
Pleural
fluid: Higher amounts of pleural fluid in the chest are
associated with a poorer prognosis.
·
Patient
activity level: The most active patients have a better
prognosis.
·
Recurrence
of cancer: A recurrence of mesothelioma is associated with a
darker prognosis.
Improve
your prognosis
By taking proactive measures, it is
possible to live longer and better with malignant pleural mesothelioma. Some
patients even get a remission after treatment and live for years without cancer
symptoms.
The inspiring stories of mesothelioma
survivors reveal many different ways of meeting the cancer challenge. However,
many survivors make the same basic choices to promote their well-being.
How
can one live longer with pleural mesothelioma?
·
Try to find treatment from an
experienced mesothelioma specialist
·
Improve your lifestyle to improve your
overall health
·
Access the latest therapies with a
clinical trial
·
Use palliative and complementary
medications to improve your quality of life
A
hope to cure mesothelioma
There is no definitive
cure for pleural mesothelioma. However, a combination of surgery, chemotherapy
and radiotherapy has allowed patients to improve their prognosis. Even patients
who are not eligible for surgery survived years after their diagnosis through
experimental clinical trials and emerging therapies such as immunotherapy.
Researchers around the
world have dedicated their careers to finding more effective treatments to heal
pleural mesothelioma and to diagnose cancer early.
·
Emily Ward was diagnosed in 2012 after
working for 43 years as a registered nurse. She used her medical history to
find the best mesothelioma specialists available to treat her cancer, including
the late Dr. David Sugarbaker. After a pleurectomy and decortication, three
cycles of chemotherapy and now monthly treatments at Keytruda, Ward enjoys a
good quality of life by doing many of the things she did before her diagnosis.
·
Tim Crisler has passed the 17-year mark
as a survivor of pleural mesothelioma in 2019. He attributes his long-term
survival to extrapleural pneumonectomy surgery, which removes the lungs. He
still suffers from residual pain, but he is able to travel the country with his
beloved Harley Davidson since his diagnosis in 2002. "I have absolutely no
problem with mesothelioma cancer today," he said. he declares. "It
has not touched me for a long time."
·
Sallie Morton survived pleural
mesothelioma for four years by discontinuing conventional therapy. She was not
eligible for surgery when she was diagnosed in 2013 at the age of 87 and she
refused chemotherapy after seeing too many friends cope with the serious side
effects of the drugs. She did it in her own way, creating surprising doubts and
organizing events and parties to the end. "It's one of the largest,"
she often describes herself.


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