En väl differentierad gliomform bestående av tumörceller av astrocyttyp, med varierande mängd fibrillärt stroma. Ett vanligt klassificeringssystem för dessa tumörer bygger på graden av malignitet (gra d I-IV). Hos personer yngre än 20 år uppkommer astrocytom vanligen i lillhjärnan; hos vuxna uppstår tumörerna oftast i cerebrum, ibland med snabb och utbredd tillväxt.
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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Astrocytomas — Astroglioma — Astrogliomas — Glioma, Astrocytic — Astrocytic Glioma — Astrocytic Gliomas — Gliomas, Astrocytic — Astrocytoma, Grade I — Grade I Astrocytoma — Grade I Astrocytomas — Astrocytoma, Grade II — Grade II Astrocytoma — Grade II Astrocytomas — Pleomorphic Xanthoastrocytomas — Pleomorphic Xanthoastrocytoma — Xanthoastrocytoma, Pleomorphic — Astrocytoma, Protoplasmic — Protoplasmic Astrocytoma — Protoplasmic Astrocytomas — Astrocytoma, Subependymal Giant Cell — Subependymal Giant Cell Astrocytoma — Intracranial Astrocytoma — Astrocytoma, Intracranial — Intracranial Astrocytomas — Oligoastrocytoma, Mixed — Mixed Oligoastrocytoma — Mixed Oligoastrocytomas — Pilocytic Astrocytoma — Astrocytoma, Pilocytic — Pilocytic Astrocytomas — Cerebral Astrocytoma — Astrocytoma, Cerebral — Cerebral Astrocytomas — Childhood Cerebral Astrocytoma — Astrocytoma, Childhood Cerebral — Cerebral Astrocytoma, Childhood — Childhood Cerebral Astrocytomas — Fibrillary Astrocytoma — Astrocytoma, Fibrillary — Fibrillary Astrocytomas — Gemistocytic Astrocytoma — Astrocytoma, Gemistocytic — Gemistocytic Astrocytomas — Anaplastic Astrocytoma — Anaplastic Astrocytomas — Astrocytoma, Anaplastic — Astrocytoma, Grade III — Astrocytomas, Grade III — Grade III Astrocytoma — Grade III Astrocytomas — Juvenile Pilocytic Astrocytoma — Astrocytoma, Juvenile Pilocytic — Juvenile Pilocytic Astrocytomas — Pilocytic Astrocytoma, Juvenile