<prompt> All of the following are features of pilocytic astrocytoma ExceptRosenthal fibresEosinophilic granular bodiesMicrocalcificationsHair like projections  <response>: Pilocytic astrocytoma, WHO Grade I, harbors BRAF V600E mutations. It is characterized by astrocytes with bipolar hair like processes and abundant Rosenthal fibers and eosinophilic granular bodies. Microcalcifications and chicken wire vasculature is characteristic of oligodendroglioma 