Brain tumor
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What is brain tumor?
Intracranial tumor
Craniocerebral tumor
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Brain tumors es with age
Adults: gliomas, meningiomas.
80-85% supratentorial compartment.
15-20% infratentorial compartment.
Children: medulloblastomas, cerebellar astrocytomas
40% supratentorial compartment.
60% infratentorial compartment.
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distribution of primary brain tumors
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6. Incidence of distribution of all gliomas by histology subtype
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Etiology
What factors can cause brain tumors?
factors
factors
factors
factors
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clinical manifestations
depend on the site of the tumors and the speed of growth
1. Features of increased intracranial pressure
1)headache
2) Vomiting
3) Papilloedema
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symptoms and signs
depends on the anatomical site
whether the tumor effect is irritative or destructive.
1)Benign: slow growing, mild edema
2)Malignant: fast growing, aggressive, severve edema
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3. clinical manifestations of lesions in the cerebral hemisphere
Epilepsy
Mental symptoms
Motor disorder
Sensory disturbance
Aphasia
Visual field defects
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Epilepsy
partial seizures
simple partial seizure
complex partial seizure
generalized seizure
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Paralysis
Muscle strength grading scale
0/5
No contraction
1/5
Visible/palpable muscle contraction but no movement
2/5
Movement with gravity eliminated
3/5
Movement against gravity only
4/5
Movement against gravity with some resistance
5/5
Movement against gravity with full resistance(normal)
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Aphasia
agraphia
motor aphasia
Broca’s area
Wernicke’s area
alexia
sensory aphasia
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4. Clinical manifestations of lesions in the sellar region
Decreased vision
Visual field defects
Endocrinological symptoms
hypopituitarism
Hyperprolactinemia
Acromegaly/g
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