FACTSGTR is #1 association with survivalpeak age 10-15 yrs, M = Faccount for 60% of intramedullary spinal tumors (usually at filum)typically infratentorialHPIFocused ExamIMAGINGMRI Brain w/wolobulated, circumscribed, cystic, moderate enhancement, Ca2+ (50%)rarely invasive (usually circumscribed with overlying ependyma) A/PPathologyGross path: tan-redIHC: GFAP, PTAH