If you have a brain tumor, you must have the
greatest interest in the biology of the tumor. Brain tumors can be divided into
two groups according to their biology, benign or malignant. The characteristics
of each tumor are as follows.
Benign brain tumor:
1. It often arises from adjunctive brain
tissues, such as meninges (a membrane that covers the brain) or cranial nerves.
2. It grows very slowly, over months or even
years. Therefore, if you have any symptoms, the tumor size is relatively
large.
3. It shows expansive growth. It compresses
the surrounding neural structures and doesn't destroy them, thus the symptoms
can be reversible.
4. It is often curable by a surgical
excision.
5. It is rarely the cause of death.
Malignant brain tumor:
1. It often arises from inside the brain.
2. It grows very quickly, over weeks or even
days.
3. It shows invasive growth. The tumor cells
can infiltrate into the normal brain tissue.
4. Radiation therapy and chemotherapy are
essential after surgical removal.
5. Recurrence is always possible.
6. A cure of the disease is rare and it is
often fatal. The malignant tumors are subdivided into two groups: primary and
secondary. Primary brain tumors originate from the brain. Secondary brain
tumors are metastatic brain tumors from systemic cancer, most commonly from lung cancers.
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