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Neoplasias: Space Occupying Masses: Neuropathology - Coggle Diagram
Neoplasias: Space Occupying Masses: Neuropathology
primary nervous system neoplasia
types
neuronal and mixed neuronal-glial neoplasms
olfactory neuroblastoma/esthesioneurblastoma
gangliocytoma
ganglioglioma
embryonal tumors
primitive neuroectodermal tumors
medulloblastoma
neuroblastoma
ependymoblastoma
thoracolumbar spinal tumor of young dogs
characteristics
rare
young animals affected
gross
thoraco-lumbar spinal tumor
intramedullary location
often occur on roof of 4th ventricle
may cause obstructive hydrocephalus
ependymal and plexus choroid tumors
choroid plexus papilloma/carcinoma
ependymoma
glial
most common forms
glioblastoma multiforme
high grade
astrocytomas
low grade
anaplastic astrocytomas
medium grade
gemistocytic appearance
characteristics
aged dogs and cats
gross
can be anywhere in brain
:no_entry: cerebellum, spinal cord
variable
appearance
texture
demarcation
more palpable than visible
gliomastosis cerebri
oligoastrocytomas
oligodendroglioma
common in dog
gross
located anywhere but common in cerebrum
periventricular orientation
tend to grow into ventricles
CSF dissemination
hydrostatic edema
large
well-demarcated
grey to pink
soft and glossy
common features
hemorrhage
mucinous consistency
meningeal
meningioma
mesenchymal
lymphosarcoma
neoplastic reticulosis/non-B non-T lymphocytic neoplasm
tumors of peripheral nerves and nerve sheaths
Schwannoma
characteristics
occur in all animals
most common in dogs
will not metastasize outside of CNS
ventricular system metastasis occurs
age
most common in older or middle aged animals
embryonal tumors possible
breed dispositions
brachyocephalics
grossly recognizable
no known cause
diagnosis
IHC
