Brain Tumors Cancer from Diagnosis to Treatment
What Is a Brain Tumor?
A brain tumor is an abnormal growth of cells within the brain or surrounding structures. These cells multiply uncontrollably, forming a mass that can interfere with normal brain function, depending on its size and location.
Brain tumors can be benign | non-cancerous or malignant | cancerous.
Even benign tumors can be dangerous because the skull limits space for brain expansion, causing pressure on vital brain areas.
A brain tumor is an abnormal growth of cells within the brain or surrounding structures. These cells multiply uncontrollably, forming a mass that can interfere with normal brain function, depending on its size and location.
Brain tumors can be benign | non-cancerous or malignant | cancerous.
Even benign tumors can be dangerous because the skull limits space for brain expansion, causing pressure on vital brain areas.
Types of Brain Tumors
Primary Brain Tumors | start in the brain
Gliomas
arise from glial cells | support cells of the brain.
• Astrocytoma / Glioblastoma multiforme
• Oligodendroglioma.
• Ependymoma.
Meningioma
develops in the meninges | membranes covering the brain.
Medulloblastoma
fast-growing tumor, often seen in children.
Pituitary adenoma
affects hormone-producing gland.
Schwannoma
develops from nerve sheath cells | often the acoustic nerve.
Secondary Brain Tumors | Metastatic
Originate from cancers elsewhere in the body | e.g., lung, breast, melanoma, kidney | that spread to the brain.
Primary Brain Tumors | start in the brain
Gliomas
arise from glial cells | support cells of the brain.
• Astrocytoma / Glioblastoma multiforme
• Oligodendroglioma.
• Ependymoma.
Meningioma
develops in the meninges | membranes covering the brain.
Medulloblastoma
fast-growing tumor, often seen in children.
Pituitary adenoma
affects hormone-producing gland.
Schwannoma
develops from nerve sheath cells | often the acoustic nerve.
Secondary Brain Tumors | Metastatic
Originate from cancers elsewhere in the body | e.g., lung, breast, melanoma, kidney | that spread to the brain.
1. Early Signs and Symptoms
• Persistent or severe headaches
• Nausea and vomiting
• Vision problems
• Hearing changes
• Seizures
• Weakness or numbness in limbs or face
• Difficulty with balance or coordination
• Memory loss, confusion, or personality changes
• Speech difficulties
• Persistent or severe headaches
• Nausea and vomiting
• Vision problems
• Hearing changes
• Seizures
• Weakness or numbness in limbs or face
• Difficulty with balance or coordination
• Memory loss, confusion, or personality changes
• Speech difficulties
2. Causes and Risk Factors
The exact cause is unknown, but risk factors include
• Genetic conditions
• Previous radiation exposure
• Family history of brain tumors
• Weakened immune system
The exact cause is unknown, but risk factors include
• Genetic conditions
• Previous radiation exposure
• Family history of brain tumors
• Weakened immune system
3. Diagnostic Procedure
Neurological Examination
Tests reflexes, balance, vision, hearing, and coordination.
Imaging Tests
Magnetic Resonance Imaging:
most accurate for detecting tumors.
CT Scan:
useful for quick imaging and detecting calcifications or bleeding.
Functional MRI:
maps brain activity near the tumor.
PET Scan:
shows metabolic activity of tumor cells.
Biopsy
A small sample of tumor tissue is examined under a microscope to confirm cancer type and grade.
May be done surgically or through a needle guided by imaging.
Lumbar Puncture | Spinal Tap
In certain cases, used to detect cancer cells in cerebrospinal fluid
Neurological Examination
Tests reflexes, balance, vision, hearing, and coordination.
Imaging Tests
Magnetic Resonance Imaging:
most accurate for detecting tumors.
CT Scan:
useful for quick imaging and detecting calcifications or bleeding.
Functional MRI:
maps brain activity near the tumor.
PET Scan:
shows metabolic activity of tumor cells.
Biopsy
A small sample of tumor tissue is examined under a microscope to confirm cancer type and grade.
May be done surgically or through a needle guided by imaging.
Lumbar Puncture | Spinal Tap
In certain cases, used to detect cancer cells in cerebrospinal fluid
4. Grading
Grade I - Slow-growing, least aggressive
Grade II - Relatively slow-growing but may recur.
Grade III - Malignant, faster growing.
Grade IV - Highly malignant, very aggressive
Grade I - Slow-growing, least aggressive
Grade II - Relatively slow-growing but may recur.
Grade III - Malignant, faster growing.
Grade IV - Highly malignant, very aggressive
5. Treatment Options
➛ Surgery
Remove as much tumor as safely possible.
Techniques include craniotomy, neuronavigation, or awake brain surgery for critical areas.
May relieve pressure and improve symptoms even if not fully curative.
➛ Radiation Therapy
Used after surgery or when surgery isn’t possible.
Types include:
External beam radiation.
Stereotactic radiosurgery
➛ Chemotherapy
Drugs such as Temozolomide | common for glioblastoma.
May be given orally, intravenously, or through wafers placed in the brain during surgery.
➛ Targeted Therapy
Drugs that specifically attack genetic or molecular changes in tumor cells.
➛ Immunotherapy
Boosts the immune system's ability to recognize and destroy cancer cells.
➛ Supportive Care | Palliative
Corticosteroids reduce swelling.
Anticonvulsants prevent seizures.
Pain management and rehabilitation therapies | speech, physical, occupational.
➛ Surgery
Remove as much tumor as safely possible.
Techniques include craniotomy, neuronavigation, or awake brain surgery for critical areas.
May relieve pressure and improve symptoms even if not fully curative.
➛ Radiation Therapy
Used after surgery or when surgery isn’t possible.
Types include:
External beam radiation.
Stereotactic radiosurgery
➛ Chemotherapy
Drugs such as Temozolomide | common for glioblastoma.
May be given orally, intravenously, or through wafers placed in the brain during surgery.
➛ Targeted Therapy
Drugs that specifically attack genetic or molecular changes in tumor cells.
➛ Immunotherapy
Boosts the immune system's ability to recognize and destroy cancer cells.
➛ Supportive Care | Palliative
Corticosteroids reduce swelling.
Anticonvulsants prevent seizures.
Pain management and rehabilitation therapies | speech, physical, occupational.
6. Preferred Nutrition for Patients
Protein-rich foods:
eggs, lean meat, fish, beans, lentils.
Fruits & vegetables:
berries, spinach, carrots.
Whole grains:
oats, brown rice, quinoa.
Hydration:
water, soups, herbal teas.
Protein-rich foods:
eggs, lean meat, fish, beans, lentils.
Fruits & vegetables:
berries, spinach, carrots.
Whole grains:
oats, brown rice, quinoa.
Hydration:
water, soups, herbal teas.
7. Follow-Up
➛ Benign tumors can often be cured by surgery.
➛ Malignant tumors may require ongoing treatment and monitoring.
➛ Regular MRI scans are needed to detect recurrence.
➛ Rehabilitation may be needed to regain lost abilities.
➛ Benign tumors can often be cured by surgery.
➛ Malignant tumors may require ongoing treatment and monitoring.
➛ Regular MRI scans are needed to detect recurrence.
➛ Rehabilitation may be needed to regain lost abilities.
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