The primary intracerebral malignancies that may cause drop metastases to the subarachnoid space are:
These can be remembered using this mnemonic:
Gruesome Masses Progressively Extend Caudally
MPEG
GEM
PPPG GAME
Mnemonic
Gruesome Masses Progressively Extend Caudally
G: GBM, germinoma
M: medulloblastoma
P: pineocytoma, PNET
E: ependymoma
C: choroid plexus carcinoma
MPEG
M: medulloblastoma
P: pineocytoma, PNET
E: ependymoma
G: GBM, germinoma
GEM
G: GBM, germinoma
E: ependymoma
M: medulloblastoma
PPPG GAME (#PUPG GAME)
P: PNET
P: Pineblastoma
P: Pineocytoma
G: GBM
G: Germinoma
A: Anablastic glioma
M: Medulloblastoma
E: Ependymoma