and grow within it The most common histological types are:ependymomas (about 5min 45%)astrocytomas (about 45%),haemangioblastomas (about 5%) and others (about 5%) The clinical presentation is usually slowly progressive 5min Diagnostically plain films of the spine are rarely positive .CT is rarely useful.since the resolution within the spinal canal is 5min limited and only indirect signs of thinning of the pedicles and enlargement of the spinal canal.when present.may be seen MR is the gold standard today 5min and grow within it ⚫ The most common histological types are: ependymomas (about 45%),astrocytomas (about 45%), haemangioblastomas (about 5%) and others (about 5%) ⚫ The clinical presentation is usually slowly progressive ⚫ Diagnostically plain films of the spine are rarely positive ⚫ CT is rarely useful, since the resolution within the spinal canal is limited and only indirect signs of thinning of the pedicles and enlargement of the spinal canal, when present, may be seen ⚫ MR is the gold standard today 5min 5min 5min 5min