- cerebellar astrocytoma
- an astrocytoma in the cerebellum; the most common kind, the juvenile pilocytic a., has a low grade of malignancy, but a second variety, the diffuse cerebellar a., is of a higher grade.
Medical dictionary. 2011.
Medical dictionary. 2011.
diffuse cerebellar astrocytoma — a cerebellar astrocytoma that is solid, dense, and infiltrative and resembles a fibrillary astrocytoma; it occurs more frequently in adults and has a higher grade of malignant potential than a pilocytic astrocytoma … Medical dictionary
astrocytoma — A glioma derived from astrocytes. [G. astron, star, + kytos, cell, + oma, tumor] anaplastic a. intermediate grade a. characterized by increased cellularity, nuclear pleomorphism, mitoses, and variable … Medical dictionary
pilocytic astrocytoma — an astrocytoma resembling the fibrillary type but with its fibrils arranged in parallel rows; its grade of malignancy is low. The most common kind is the cerebellar juvenile pilocytic a. In adults the pilocytic type is usually found in the… … Medical dictionary
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Cyst — A closed sac or capsule, usually filled with fluid or semisolid material. * * * 1. A bladder. 2. An abnormal sac containing gas, fluid, or a semisolid material, with a membranous lining. SEE ALSO: pseudocyst. [G. kystis, bladder] adventitious c.… … Medical dictionary
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