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Brain Tumors Are Either Malignant or Benign,depending on the Cell

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Brain tumors are either malignant or benign,depending on the cell type.Primary tumors generally do not resemble the carcinomas and sarcomas found elsewhere in the body and rarely metastasize outside the CNS.Both primary and metastatic tumors of the brain and its membranes are included in the term intracranial tumors.What three tumor types are the most frequently seen CNS tumors in adults?


Definitions:

Genetic Information

The instructions encoded in the DNA and genes of an organism for development, functioning, growth, and reproduction.

Nucleus

A membrane-bound organelle found in eukaryotic cells, containing most of the cell's genetic material.

Chromosome

The structure that transmits the genetic material from one generation to the next; composed of condensed chromatin; each species has a particular number of chromosomes that is passed on to the next generation.

Gene

A unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

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