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All you need to know about brain
Tumours
What is a
brain tumor?
A brain tumor is
a collection, or mass, of abnormal cells in your brain. Your skull, which
encloses your brain, is very rigid. Any growth inside such a restricted space
can cause problems. Brain tumors can be cancerous (malignant) or noncancerous
(benign). When benign or malignant tumors grow, they can cause the pressure
inside your skull to increase. This can cause brain damage, and it can be
life-threatening.
Brain tumors are
categorized as primary or secondary. A primary brain tumor originates in your
brain. Many primary brain tumors are benign. A secondary brain tumor, also
known as a metastatic brain tumor, occurs when cancer cells spread to your
brain from another organ, such as your lung or breast.
Types of brain
tumors
Primary brain
tumors
Primary brain
tumors originate in your brain. They can develop from your:
·
brain cells
·
the membranes that surround
your brain, which are called meninges
·
nerve cells
·
glands
Primary tumors
can be benign or cancerous. In adults, the most common types of brain tumors
are gliomas and meningiomas.
Gliomas
Gliomas are
tumors that develop from glial cells. These cells normally:
·
support the structure of your
central nervous system
·
provide nutrition to your
central nervous system
·
clean cellular waste
·
break down dead neurons
·
Gliomas can develop from
different types of glial cells.
The types of
tumors that begin in glial cells are:
astrocytic
tumors such as astrocytomas, which originate in the cerebrum
oligodendroglial
tumors, which are often found in the frontal temporal lobes
glioblastomas,
which originate in the supportive brain tissue and are the most aggressive type
Other primary brain tumors
Other primary
brain tumors include:
·
pituitary tumors, which are
usually benign
·
pineal gland tumors, which can
be benign or malignant
·
ependymomas, which are usually
benign
·
craniopharyngiomas, which occur
mostly in children and are benign but can have clinical symptoms like changes
in vision and premature puberty
·
primary central nervous system
(CNS) lymphomas, which are malignant
·
primary germ cell tumors of the
brain, which can be benign or malignant
·
meningiomas, which originate in
the meninges
·
schwannomas, which originate in
cells that produce the protective cover of your nerves (myelin sheath) called
Schwann cells
Most meningiomas
and schwannomas occur in people between the ages of 40 and 70. Meningiomas are
more common in women than men. According to the doctors from the best hospital
in Hyderabad, Schwannomas occur equally in both men and women. These tumors are
usually benign, but they can cause complications because of their size and
location. Cancerous meningiomas and schwannomas are rare but can be very
aggressive.
Secondary
brain tumors
Secondary brain
tumors make up the majority of brain cancers. They start in one part of the
body and spread, or metastasize, to the brain. The following can metastasize to
the brain:
·
lung cancer
·
breast cancer
·
kidney cancer
·
skin cancer
Secondary brain
tumors are always malignant. Benign tumors don’t spread from one part of your
body to another.
What are the
risk factors for a brain tumor?
Risk factors
for brain tumors include:
Family
history
Only about 5 to
10 percent of all cancers are genetically inherited, or hereditary. It’s rare
for a brain tumor to be genetically inherited. Talk to your doctor if several
people in your family have been diagnosed with a brain tumor. Your doctor can
recommend a genetic counselor for you.
Age
Risk for most
types of brain tumors increases with age.
Race
Brain tumors in
general are more common among Caucasians. However, African-American people are
more likely to get meningiomas.
Chemical
exposure
Being exposed to
certain chemicals, such as those you might find in a work environment, can
increase your risk for brain cancer, said by senior neuro surgeon from besthospital in hyderabad. The National Institute for Occupational Safety and
HealthTrusted Source keeps a list of potential cancer-causing chemicals found
in work places.
Exposure to
radiation
People who have
been exposed to ionizing radiation have an increased risk of brain tumors. You
can be exposed to ionizing radiation through high-radiation cancer therapies.
You can also be exposed to radiation from nuclear fallout. The nuclear power
plant incidents in Fukushima and Chernobyl are examples of how people can be
exposed to ionizing radiation.
No history of
chicken pox
According tothe
American Brain Tumor Association, people with a history of childhood chicken
pox have a decreased risk of getting brain tumors.
https://yarabook.com/read-blog/161409
https://oneway.com/prathimahospitals/2wegsf_c66wz4oby
https://prathimahospital123.blogspot.com/2020/11/prathima-hospitals-best-hospital-in_8.html
https://ext-5572852.livejournal.com/759.html
https://www.evernote.com/shard/s705/sh/85b880f7-9fd9-0b01-25f6-7e5859bd7ea0/da3a77e4b7811871ed9834ef9686fd38
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