It was described as monomorphous piloid
cells loosely arranged, displayed in a uniform and extensive myxoid background.
Given an association with piloid
gliosis and abundance of Rosenthal fibers, even an old, often superficially located pilocytic astrocytoma with abundance of calcifications enters into the differential.
The first is a cytologically bland and generally paucicellular astroglial proliferation with spindle, stellate, and piloid
cells resembling pilocytic astrocytoma (Figure 12).
16] In these 5 cases, the astrocytic proliferation was composed of elongated piloid