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Health Dictionary

Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.

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High grade astrocytoma

Introduction

Overview

Overview

  • Astrocytoma is a primary intracranial tumor. They may arise in the cerebral hemispheres, in the posterior fossa, in the optic nerve, and rarely, the spinal cord. It originates in a particular kind of glial-cells, star-shaped brain cells in the cerebrum called astrocytes. This type of tumor does not usually spread outside the brain and spinal cord and it does not usually affect other organs. Astrocytoma is the most common glioma and can occur in most parts of the brain and occasionally in the spinal cord. To know more about astrocytoma, click here.
  • Astrocytoma is classified broadly into low-grade and high-grade astrocytoma. To know more about low-grade astrocytoma, click here.
  • High-grade astrocytoma is classified into two subtypes, and they are as follows:[1]
 
 
 
 
 
 
 
 
 
 
 
 
High-grade astrocytoma
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
WHO grade III
 
 
 
 
 
 
 
 
 
WHO grade IV
 
 
 
 
 
 
 
 
 
 
 
 
 
References

References

  1. ↑ LDescription of astrocytoma. American Brain Tumor Association 2016. http://www.abta.org/brain-tumor-information/types-of-tumors/astrocytoma.html?referrer=https://www.google.com/. Accessed on January 5, 2016

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Sujit Routray, M.D. [2]