A cervicomedullary tumor in a 22-month-old female with an eight-month
history of symptoms showed the histological features of a pilocytic as
trocytoma but had many areas of palisading cells identical to those de
scribed in polar spongioblastomas. The tumor recurred 18 months later
and showed predominately pilocytic features. The case is used to discu
ss polar spongioblastomas and tumors which can histologically simulate
them.