August 3, 2021

Brain Tumor – Types, Symptoms, and Causes

The brains are the seat of all we are. Every thought and action all of us perform is an output of our mind. So understandably the thought of an disorder striking the brain can be terrifying.

Brain cancer is a rare but destructive form of cancer accounting for 2% of all cancer cases worldwide. Human brain cancer refers to the abnormal development and division of cells inside the brain. Brain tumours can be either benign or cancerous and malignant brain tumours are further split into primary brain tumours that start in the brain and secondary tumours that will start elsewhere in the body and distribute (metastasize) to the brain.

Whether benign or a malignant tumour can raise the volume of the brain which creates stress in the tight skull space. The bony skull is extremely hard plus rigid. Any encroachment in this restricted space increases intracranial pressure which can lead to brain damage, coma, and also death.

Types Of Brain Tumours

The first major classification of types of human brain tumours is benign and cancerous tumours. Benign brain tumours would be the least aggressive and slowest developing tumours. They do not have cancerous cells and have a good prognosis after treatment.

Malignant or cancerous brain tumours arise from brain cells, supportive cells, and other tissue found in and around the brain. These are high-grade tumours. Grading for tumours involves rating a rise on a scale of 1 to 4 with low-grade scores being 1 and 2, and 3 plus 4 are high grade.
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Benign tumours are low grade which is sluggish growing, contained, less likely to distribute, and unlikely to return after removal. On the other hand, malignant or cancerous tumours are high grade which means they are fast growing, spread to surrounding tissues, and are more likely to return after elimination.

Cancerous tumours are further divided into primary and secondary tumours.

Primary cancerous tumours originate inside the brain itself while secondary tumours are a result of metastasis from tumours in other organ systems, commonly from the lungs.

Primary tumours are rarer and the most common types of primary brain tumours are gliomas and meningiomas. Gliomas affect the glial cells which are supportive cells in the brain that offer nourishment and structural support in order to neurons. Gliomas account for 50% of all primary brain tumours.

Symptoms Of Brain Tumours

The brain is a large plus complicated organ. Symptoms of brain tumours depend on the size, type, and location of a tumour. Some common signs are:

Headaches, typically worse each morning and progressively worsening over time.
Chronic nausea
Persistent vomiting
Dizziness
Intensifying body weakness
Fatigue
Unexplained weight reduction
Behavioural or mood changes
Vision problems
Confusion and memory impairment
Specific symptoms depend on the size of a tumour and its location. Based on this particular, some of the signs and symptoms that may be noticed are usually:
Personality changes, less inhibition, bad judgement, etc . in frontal lobe tumours
Language difficulties, poor storage, and hearing problems in temporary lobe tumours
Sensory disturbances, intensifying muscle weakness, etc . In parietal lobe tumours
Visual disturbances or loss of vision in occipital lobe tumours.
Loss of balance and coordination in cerebellar tumours.
Changes in respiration, blood pressure, and heartbeat within brain stem tumours

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