INTRACRANIAL TUMORS Flashcards
MC PRIMARY BRAIN TUMORS IN ADULTS
Malignant brain tumors that originate from GLIAL cells
Necrosis and microvascular proliferation
GLIOBLASTOMA
supratentorial – temporal lobe
ASTROCYTIC tumor characterized by piloid cells, Rosenthal fibers and eosinophilic granular bodies with no tendency for anaplastic progression
PILOCYSTIC ASTROCYTOMA
optic pathway and posterior fossa
children and YA
Low grade gliomas from ASTROCYTES
DIFFUSE ASTROCYTOMA
supratentorial – frontal lobe
Gliomas derived from ependymal cells that line the ventricles
ROSETTES and PERIVASCULAR PSEUDOROSETTES
EPENDYMOMA
ADULT - supratentorial
CHILDREN - posterior fossa
Gliomas derived from OLIGODENDROCYTES that line the ventricles
CHICKEN WIRE PATTERN and FRIED EGG APPEARANCE
Oligodendroglioma
2nd MC tumor after gliomas
DURAL based tumor that arises from ARACHNOID cap cells
PSAMMOMA bodies or ONION skin pattern
MENINGIOMA
Supratentorial
may RECUR even after gross total resection
MC primary malignant brain tumor in CHILDREN
MALIGNANT tumor that originates from GRANULAR CELLS of the cerebellum
HOMER WRIGHT ROSETTES
MEDULLOBLASTOMA
posterior fossa (cerebellar vermis)
Benign tumor that arises from the nerve sheath of the vestibular component of CN VIII
VESTIBULAR SCHWANOMMA (ACOUSTIC NEUROMA)
Benign tumors that arise from the PITUITARY GLAND commonly from the ADENOHYPOPHYSIS
BITEMPORAL HEMIANOPSIA from compression of the OPTIC CHIASM and/or endocrine symptoms from functioning pituitary tumors
PROLACTINOMA: galactorrhea-amenorrhea
GH-SECRETING: acromegaly
ACTH-SECRETING: Cushing disease
TSH-SECRETING: hyperthyroidism
PITUITARY ADENOMA
sellar-suprasellar region
Benign tumor that arise from remnants of RATHKE POUCH and the CRANIOPHARYNGEAL DUCT
CHILDREN - blurring of vision and hypopituitarism
DIABETES INSIPIDUS - common complication after surgery
CRANIOPHARYNGIOMA
sellar-suprasellar region
MC BRAIN TUMORS
METASTASES
