Also found in: Dictionary, Encyclopedia.
Related to fibrillary astrocytoma: protoplasmic astrocytoma
astrocytoma derived from fibrillary astrocytes.
A relatively slow growing astrocytoma histologically composed of cells with many fibrils. It usually is found in adolescents and young adults. Although its cells are moderately well differentiated, they tend to invade neighboring tissues.
See also: astrocytoma