About The Medical Condition Astrocytoma, Pilocytic
Find the definition of the medical term Astrocytoma, Pilocytic. Astrocytoma, Pilocytic defined and explained for easy understanding at the Medical Conditions from ClusterMed.info.
Astrocytoma, Pilocytic
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What's The Definition Of The Medical Condition Astrocytoma, Pilocytic?
Neoplasms of the brain and spinal cord derived from glial cells which vary from histologically benign forms to highly anaplastic and malignant tumors. Fibrillary astrocytomas are the most common type and may be classified in order of increasing malignancy (grades I through IV). In the first two decades of life, astrocytomas tend to originate in the cerebellar hemispheres; in adults, they most frequently arise in the cerebrum and frequently undergo malignant transformation. (From Devita et al., Cancer: Principles and Practice of Oncology, 5th ed, pp2013-7; Holland et al., Cancer Medicine, 3d ed, p1082)
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