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Space occupying masses: Neuropathology - Coggle Diagram
Space occupying masses: Neuropathology
lead to...
increased cranial pressure
causes
space-occupying masses
granulomas
equine cholestrol granulomas
cholesteatoma
may cause parenchymal atrophy and obstructive hydroencephalus
neoplasias
primary nervous system neoplasias
hydrocephalus
choroid plexus tumors
ependymomas
least common
gross
ventricular orientation
moderately demarcated
soft
grey-pink
protrudes into ventricular system
CSF dissemination may occur
tumors blocking mesenphalic aqueduct
CSF accumulation
congestion
brain edema
consequences
local deformity
reduced CSF
distortion
herniation
can lead to hemorrhagic infarction
types
subfalcine
cingulate gyrus slips beneath dural septum
transtentorial
occipital cortex slips benerath dural septum + bone
foraminal cerebellar vermal
most common
herniation of cerebellum, slipping out of cranial vault
may disrupt respiratory centers and/or compress brainstem
transcalvarial
skull fracture
rare
ischemic necrosis
compromised regional perfusion
endothelial damage
vasogenic edema
cytotoxic edema
displacement of nervous tissue
compression atrophy
replacement of nervous tissue
types
cysts
parasitic
non-parasitic
brain swelling
congestive
increased diameter of blood-containing vasculature
caused by trauma
localized or genralized
vascular lesions
hemorrhage
causes
trauma
infarction
clotting disorders
degenerative lesions
hypertension
aterosclerosis
aneurysms - almost non-existing in animals
vascular necrosis, vasculitis
infarction
arterial or venous thrombosis
abscesses
