"Intracranial germ cell tumours make up approximately 0.4 to 1% of brain tumours in the western population, although the incidence is up to 8 times higher in the far east (as is the rate of testicular tumours) 1-2."
"calcification: present in the majority of cases, usually representing engulfed normal pineal calcification, as well as sometimes tumour calcification 3."
"T1: isointense to grey matter"
"T2: isointense to grey matter"
"DWI: restriction is common especially for germinomas due to high cellularity"
"SWI: haemorrhage is common in non-germinomatous germ cell tumours"
"Non-germinomatous tumours have much worse prognosis with survival rates ranging between 40-70% 1."
"Teratoma prognosis depends on the degree of differentiation (mature vs. immature) and whether malignant transformation on a component is present (uncommon). In general, mature teratomas are indolent, whereas immature teratomas do poorly, with survival rates ranging between 50-70% 1."
"Teratoma prognosis depends on the degree of differentiation (mature vs. immature) and whether malignant transformation on a component is present (uncommon). In general, mature teratomas are indolent, whereas immature teratomas do poorly, with survival rates ranging between 50-70% 1."