Brain Tumour: Signs, Diagnosis & Treatment | Dr. Harsh Jain | Manipal Hospitals Kolkata
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A brain tumor is defined as a mass of abnormal cells that grow rapidly, though it is crucial to understand that not all such tumors are cancerous. While cancers like lung cancer have established direct causes such as smoking, the etiology of brain tumors remains largely unknown, with only very rare genetic variants playing a role in exceptional cases. Common misconceptions often link these growths to mobile phone usage or lifestyle factors, but scientific evidence does not support these claims. Instead, symptoms arise primarily from two factors: the size of the tumor and its specific location within the skull. Because the skull is a closed cavity with no room for expansion, even a small tumor in a critical area can cause significant issues by increasing intracranial pressure or affecting "eloquent" areas that control movement, speech, or personality.
The clinical presentation varies significantly depending on whether the tumor is benign or malignant. Benign tumors grow slowly over a long period, often leading patients to present with large masses after years of gradual progression. In contrast, cancerous tumors consist of rapidly dividing cells and typically appear suddenly with a shorter history. Symptoms can range from common headaches, which are frequent in the general population due to stress and lifestyle, to specific "red flag" signs that warrant immediate medical attention. These warning signs include new-onset constant headaches accompanied by nausea or vomiting, blurred vision, seizures, or noticeable changes in personality and behavior, such as sudden depression or withdrawal, which often occur when the frontal lobe is affected.
Diagnosis relies on imaging techniques, starting with a CT scan for initial suspicion, followed by a contrast MRI, which serves as the gold standard for definitive diagnosis. Treatment strategies differ based on the tumor type; benign tumors are often curable through surgery aimed at maximum safe removal while preserving neurological function, a concept known as functional balance. For malignant tumors, while a complete cure may not always be possible, the goal is to maximize survival time and quality of life through surgery combined with adjuvant therapies like radiation and chemotherapy. Modern advancements have transformed these procedures, utilizing neuronavigation, intraoperative mapping, and even awake surgeries where patients interact during the operation to ensure critical functions are preserved.
Post-operative recovery has also improved dramatically thanks to minimally invasive techniques that minimize tissue disruption and reduce physical scarring, allowing many patients to return to their normal lives quickly. The psychological impact of surgery is equally important, with modern approaches avoiding hair shaving to reduce trauma for the patient and their families. Ultimately, having a brain tumor is no longer synonymous with the end of life; early detection, advanced diagnostics, and sophisticated surgical technologies have enabled patients to lead productive, normal lives even after treatment for malignant conditions. Regular surveillance through MRI scans ensures that any recurrence can be managed promptly, reinforcing the message that these conditions are manageable rather than fatal.
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Good evening ladies and gentlemen
welcome to our show
neurosurgeon Dr. Har Jan senior
consultant neurosurgeon manipal hospital
sir welcome to our show sir thank you
>> our top today our topic is brain tumor
understanding science diagnosis and
treatment brain tumor
brain tumor
Dr.
>> [clears throat]
>> Bangla English mixed
technical
basically tumor any form of any type of
growth anywhere in the body which is a
collection of abnormal cells which are
rapidly growing
body
clump or bunch of cells they grow out of
turn that forms a mass and that is
called a tumor. Tumor.
So that is in simple language what a
brain tumor is.
That is what ultimately matters and that
is what creates maximum anxiety. So
cancers
benign but non-cancer non-cancer. So
answer to your question is that not
every brain tumor or any tumor not every
tumor for that matter is cancerous. It
can be benign.
>> Okay. So
brain tumor.
It can be benign, it can be cancerous
like
mobile.
Very interesting question. And in fact
Amrajani for example smoking causes lung
cancer
causation has been established. Okay.
Similarly there are many other GI
cancers
lung cancers etc. direct cause and
effect relationship
but unfortunately brain tumor
is not applicable.
>> In fact there are no known causes.
There are some very rare genetic
variants. Okay.
NF2 etc. But these are exceptionally
rare.
>> Okay.
>> But apart from that there is no really
known positive
common perception mobile phone usage. I
don't think there are any studies which
show that excess these are all
perceptions
>> that is to large extent perception.
>> Okay. So there's no as such.
Modifiable lifestyle factor
is family history.
That's right. Rare there are some very
very rare conditions where you know
there is some role of genetics. Apart
from that brain tumor is what we call
denovo.
That's right.
But is there any kind of warning signs
that
we shouldn't avoid the signs
important observation the thing is
brain tumor science
either it has attained a very large size
>> or it is occurring in a very critical
location.
>> Okay.
The skull is a closed box, closed
cavity.
There is no room for expansion.
And these are the three main things
which are there. Any fourth thing they
add oil then it causes an increased
pressure in that closed compartment.
>> Exactly. So then you can imagine
then
where it is it is outstripping the
capacity of the brain to accommodate a
newer fourth thing.
>> Exactly.
>> Which is [clears throat] in you know
science what we call the pressure volume
curve.
>> So so then
come back to what your question is that
when does it cause symptoms
>> exactly? So it causes symptoms as I said
now that if you understand the pressure
volume that means brain tumor
then symptoms
etc
one part of the brain it is responsible
for controlling the movement of the
opposite side of the body
that is a what is called a very eloquent
critical area. Okay.
It will cause early signs like
seizures.
Okay.
>> So that is the common. So that is what I
want to say that the symptoms of brain
tumor depend on two things. One is the
size
>> and other is one is the location and
size.
patients come to us with huge brain
tumors after a long time. Okay.
Exactly.
So that is the trick then that when it
is slowly growing
>> which means these are benign tumors mean
non-cancerous.
>> Okay. So that if you build the story
that if you have a non-cancerous tumor,
benign tumor which means it is slowly
growing that means they happen over a
long period of time so they come late.
>> Okay.
>> Whereas cancerous tumors because of the
very nature that they're cancer which
medically means very rapidly dividing
cells.
>> Exactly.
>> So they come with a shorter history but
they come earlier to us.
>> Okay. So there is no such symptoms but
there is if it is benign then
but if it is cancerous then there is a
shorter length of history.
>> Okay because of the nature of the
disease
>> because of the nature of the growth
nature of the growth how rapid and so as
a correlary to that
patient
they have some psychiatric symptoms.
Okay.
Behavioral changes. Okay.
Personality change, happy joy becomes
very depressed or is someone who was
quite you know you know withdrawn and
you know otherwise you know acts in a
different manner. So any personality
change, memory change etc. So then a lot
of the times because there are no other
symptoms so-called common symptoms like
headache
>> like headache exactly
>> patient say they are treated by
psychiatrists for year on year
>> okay
>> for knowing the facts
>> unknowing the fact for personality
changes and this typically happens
frontal lobe
frontal lobe which is as you know is
responsible for our judgment our
behavior our whole personality those
areas are affected and sometimes they
treated for psychiatric illnesses and
later on when it goes to a very big size
and then they come to us because of
size.
>> Okay.
Exactly.
>> So and then we see a very large tumor.
It is interesting but if you understand
the process
then one can even think about
anticipate.
Okay. Okay. So
symptoms
headache is one of the symptom headache
each and every person is having headache
we take a paracetamal or any [gasps]
pills. So
this headache is not normal right
>> this headache is giving me some other
signs
>> other signs right very very very
important to touch upon this. So as you
very rightly said headache is a very
common symptom. Exactly.
>> And nowadays with our kinds of
lifestyles, work habits, sleep habits,
dietary habits, it is becoming all the
more common.
>> Exactly.
>> But there are certain uh and that is
where the importance of you know a
clinician the patient coming to the
doctor and a proper history taking
headache. I mean I I can you know not
take it lightly but I can ascribe into
medical terms or where I should be more
watchful. So certain red flag signs that
say it is a shorter history
on
30year-old lady can come and say
every few days
okay then I feel
it is unlikely to be representing a
tumor. which is growing rapidly.
>> Okay.
>> Whereas if a 40y old person come and say
perfectly well and fine but last 3 four
months I feel there is a headache
constant
that headache is more and sometimes
nausea vomiting feeling and vomiting
that relieves the headache.
>> Okay.
>> This is a warning sign.
>> Okay. Or if the headache is associated
with some blurring of vision.
So it can be or it can be associated
with other more obvious like
body tingling
weakness.
Okay.
>> So headache on its own. So to rec recap
all the benign headaches
>> man which are not surgically not this
thing are they usually happen over a
long time
>> and they usually have a predictable
pattern.
>> Okay.
>> Whereas
worrying headaches that means which they
may signify brain tumor they have a
relatively shorter onset history they
have these red flag signs. red flags
like blurring vision morning this thing
morning sickness vomiting
blurring vision seizures etc.
>> So therein that history taking and
initial evaluation is very important
>> very important yes so if I consider if I
take from your answers that this kind of
a symptoms you shouldn't ignore so if
someone having seizures if someone has
having blood vision then they should
immediately with headache they then they
should immediately contact to the
doctors.
>> Right.
>> So I' I'd ask my
viewers that you shouldn't
any kind of ignore any kind of these
kind of a symptoms if you're having this
kind of a symptoms. So
brain tumor
through CT scan through MRI through
biopsy.
So forunately CT scan.
So whenever there is suspicion based on
the symptoms discuss the first thing and
the easiest thing and the least
expensive thing is to do a CT scan CT
scan CT scan proper report that's right
largely most things
okay
initial CT scan report
basis then we order further
investigations and ultimately for brain
tumor
diagnosis and treatment. A contrast MRI
is the gold standard.
>> Gold standard. Okay.
>> That is that is the final that will tell
us what the diagonally diagnosis.
>> So diagnosis is all done that some
person is having brain tumor. Now what
is the treatment procedure like
operation radiation
or any other methods you want to you
want to apply? So if you can
we have come to this stage
main decision making counseling as you
say treatment now broadly speaking
treatment the number one and gold
standard treatment is surgery. surgery.
Okay.
>> And
but number one treatment is surgery
>> and usually for if we take the benign
tumors that mean the non-cancerous
tumors usually these can be treated and
cured by surgery that means fully
removed
>> and cured by surgery. research
>> and it is these malignant or cancerous
tumors which unfortunately cannot be
cured but they can be greatly helped by
operating first and then followed by
adjuven treatments additive treatments
like radiation radiation and
chemotherapy. Okay. Okay. So
expecting
visions
Now I can understand
that is the first question and that is
the measure of success.
>> Exactly like quite rightly
that is the news that everyone wants to
hear.
>> Yes. But especially with regards to
benign tumors
and a lot of the time they are located
in very critical areas what we call the
skull baseact base of the skull
important nerves and arteries and veins.
>> Okay.
>> So the current modern treatment of
tumors
>> benign tumor especially is what we call
enkofunctional balance.
>> Okay. In simple language functional
balance
>> in simple language it means that we want
to maximize the removal of tumor safely
>> maximum safe removal of tumor but
preserving the function of the patient.
Now this may seem very obvious
the thing is
when you know previous surgery and the
whole tenet and everything that the
whole idea is to remove the full tumor.
>> Okay.
>> Okay. But Over the years experiences has
been as I said tumor important nerves
and arteries. So if for whatever reason
not willfully but if for whatever reason
they are endangered then the patient can
have devastating paralysis or you know
eye movement or any other nerve problem.
>> Exactly. Exactly.
>> So we are willfully leaving that part of
the tumor behind knowing that it is a
benign tumor.
>> Okay. These grow very very slowly.
>> Plus we have some very very effective
important adjuvent methods now like
focused radiation stereotactic
radiation.
>> Okay.
>> So if we know that a young person who's
got a benign tumor is likely to live a
normal full life.
>> Okay.
>> Why endanger a part of his say cranial
nerves etc. Whereas we can give him a
very good quality of life by removing
the most amount of tumor and subject
following him to radiation if requag.
So that is the best case scenario.
Exactly. Patient intact functionally
intact in other way and tumor is removed
and the patient is stable.
>> And if it has happened with the
cancerous man.
>> So here the game changes completely. The
picture is completely different.
Unfortunately there is no cure for
cancers you know brain cancer
especially.
>> Uh but having said that akal
of course first as a main stay is
surgery. So good micro surgery that is
the number one main state
diagnosis
biopsy hisystologology diagnosis advance
to a genetic level that mean each tumor
can now be separately classified
key genetics etc. And those genes have
also been mapped and now there are
certain targeted therapies for each type
of tumor.
>> Yes. Yes.
>> Targeted gene therapies etc. for
specific types of tumors and very
advanced radio surgical I mean radio
surgery techniques also radiation
>> so here also the same enko functional
principle applies
>> okay
>> jamra uh and what perhaps I did not
emphasize earlier on mostly benign
tumors they don't happen inside the
brain they usually from the coverings of
the brain and they tend to push the
brain the brain
Everything is happening. Everything is
happening inside the skull.
>> But because they are actually growing
from outside the brain surface, they are
pushing the brain. So they actually
provide a kind of a plane where we can
take them out. Whereas in terms of
cancer, they occur inside the brain.
>> Okay?
>> That means they're actually occupying,
invading, displacing the brain tissue.
brain tissue.
>> So a situation a complete removal
becomes even more challenging because
the adjacent area surrounded by normal
brain.
>> So when we operate on these kind of
tumors in fact we have to probably use
more technology.
>> Okay.
>> Because now we have advanced imaging
technologies. We have what is called
neuron navigation because which can tell
us exactly where in the skull to open,
how deep to go, what are the important
normal fibers near the tumor. In fact,
some certain times we even do what is
called awaketomy when a patient
under anesthesia
operation and the patient is talking
>> and we ask the patient to move the hand
the foot name objects etc. when we are
operating on very eloquent areas knowing
that even if there is a slight
disturbance then we can stop.
>> Okay.
>> So, so now it has gone to a completely
you know there's a whole new uh system
of functional neurosurgery technology
and everything.
>> So the net idea is that maximum safe
removal and to preserve a good quality
of life.
>> Exactly. So my next question be since we
are discussing about the surgery my next
question be that how is the postsurgery
life looks looks like like they can lead
a completely normal life or the or any
kind of rehabilitation is a big playing
a good big part
>> so this again you know then just extends
to jatam rag so when we are princ
operating on the principles of enco
balance
>> yes
>> and util utilizing all the technology.
So then our surgery and hence
post-operative outcome becomes safer.
>> So you can have a patient who has gone
into the operating room and comes out
looking exactly the same. And uh
nowadays with minimally invasive
techniques, keyhole techniques,
endoscopic techniques, our openings are
becoming smaller. They are becoming more
focused, goal directed. So the idea is
to disrupt normal tissue as least as
possible. So coming to your question
that you know postoperatively patient
can be look feel exactly the same as
normal. Okay. In certain areas of the
brain as I said eloquent areas despite
everything there will still be some
disturbance
to cal
of course physiotherapy right or partly
usually physiootherapy rehabilitation
has a big role big role to play
>> but in terms of the actual recovery from
the actual brain operation cutting of
the skin and the bones and everything
with current modern reconstructive
techniques techniques virtually within a
few weeks patient looks exactly the same
>> because of the minimally invasive
treatment.
>> That's right. That's right. Nowadays in
fact I I don't even shave the hair of
the patient. So because it's such a big
psychological you know barrier trauma to
the family to the patient and you know
you have a young person or any person
for that matter.
>> So it is more the the your own
philosophy how you approach something.
>> Exactly. So tmund that if you want to
preserve everything then a psychological
aspect is very important is important
>> definitely.
>> So this whole thing runs its course.
So one more question I want to add here
that tumor
right so certainly so when we talk about
malignant tumors cancerous tumors
MRI scans
at distinct intervals
MRI scan plus symptoms to the patient
unfortunately malignant tumor
because as I said right in the beginning
there is no cure for malignant brain
tumors but the quality of life and uh
length of survival has increased with
the given treatment modality treatment.
So good surgery, good quality of
surgery, good quality of adjubant
treatment, regular surveillance, early
detection of recurrence.
>> So the quality of life, length of
survival has certainly increased.
>> For benign tumors, as we already
discussed, these are very slowly growing
anyway. Exactly.
Complete removal. Recurrence is very
very low.
Maximum safe removal some
remaining tumor.
But we can do surveillance.
>> Okay.
>> Regular MRI and then if there is any
evidence yet about we can give radiation
therapy.
in fact
we have actually answered all those okay
number one misconception is headache
brain tumor
right
so it's very very clear not every
headache is a brain tumor And there are
certain warning signs, red flags to a
story. If we do early diagnosis, then
everything else follows. Treatment
follows. That is the
>> probably the most important myth. Number
two, brain tumor money end of you know,
end of life end of the road life. That
is a
thing that is really changing now with
all the kinds of technology, knowledge,
diagnostics,
surgical treatment and uh the amount of
technology now involved in the surgical
treatment. The patient safety, the
outcomes have improved dramatically.
>> Agn.
>> So having a brain tumor is no longer the
end of the road for the patient. He can
lead a normal life, normal productive
life. an definitely Dr. Jen has cleared
almost all our misconception about this
brain tumor and everything. So then also
we must have some question. If you have
any question please do comment in our
comment box. We'll try to answer your
queries as early as possible. Thank you.
Thank you for connecting with us. Thank
you Dr. Ch. Thank you for having me.
Thank you.