医
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Spinal arachnoiditis is chronic inflammation/fibrosis of spinal arachnoid, often after surgery/infection/contrast: pain/radiculopathy/myelopathy; treat by pain management, rehab.
神经外科Purulent meningitis is acute bacterial leptomeningeal suppuration: fever/headache/stiff neck/petechiae/altered consciousness; treat by IV antibiotics promptly.
神经外科Post-head-trauma (post-concussion) syndrome is persistent headache, dizziness, fatigue, irritability, cognitive complaints after mild TBI; no structural lesion; supportive, reassurance, gradual return to activity.
神经外科Brainstem tumors are mainly gliomas, but also hemangioblastomas or metastases. Brainstem gliomas mainly affect children but also young adults; middle-aged/elderly are rare. Epstein (MRI-based) divides them into 3 types: I focal, II cervicomedullary/juncti
神经外科Parietal-lobe tumors are less common than frontal/temporal; mostly gliomas (~8.52% of intracranial gliomas), then meningiomas (~6.50%), then metastases. Favor adults. Parietal-lobe function is complex: analyzing/integrating sensory information to identify
神经外科Frontal-lobe tumors are common intracranial tumors, ranking first among supratentorial sites, ~1/5 of all intracranial tumors. Gliomas are most common (~25.57% of intracranial gliomas), then meningiomas (~11.45%); congenital and metastatic tumors also occ
神经外科Tumors from anterior/posterior pituitary + craniopharyngeal epithelial remnants. Symptomatic = ~10% of intracranial tumors; male>female; young/middle-aged; affects growth/fertility/learning/work. Hormone hypersecretion, mass effect, apoplexy, hypopituitar
神经外科Common (15.31% of intracranial tumors; 2nd after glioma). Adults > elderly/children > infants; female>male. Benign meningeal-cell tumor; important orbital tumor. High incidence; visual destruction; invasive; bony spread; recurrence; mortality.
神经外科Psammoma; primary cutaneous meningioma = rudimentary meningocele. Developmental defect; head/forehead, rare external auditory canal; ectopic meningeal cells outside skull. Benign; spherical/nodular; slow-growing.
神经外科From arachnoid cap cells/dural fibroblasts; benign spinal tumor. Age 40-70, female; rarer than cranial meningioma. Spindle cells in interlacing bundles; reticulin/collagen; hyalinization.
神经外科From posterior petrous bone/tentorial invasion; excludes clival. Many asymptomatic incidental; rare multiple/familial. 50% parasagittal; also convexity/falcine; sphenoid ridge/tuberculum sellae/olfactory groove/CPA/tentorium; rare intraventricular/epidura
神经外科Base on tentorium (tentorial incisure/confluence); supratentorial/infratentorial/dumbbell types.
神经外科Stewart 1899; Cushing 1929 = 'suprasellar meningioma'. From tuberculum sellae/anterior clinoid/diaphragma sellae/planum sphenoidale. Early small = curable resection; large = risk. Surgical mortality 2.6-67%; vision improves 27.8-72.2%, worsens 5.6-38.9%.
神经外科Rare; from choroid plexus; most common = lateral-ventricle trigone.
神经外科Attached to anterior-fossa floor cribriform plate/posterior; unilateral/bilateral (unilateral common); may extend contralaterally.
神经外科Base attached to superior sagittal sinus filling its angle; no brain between tumor and sinus.
神经外科Common meningioma along interhemispheric fissure attached to falx; rarely involves superior sagittal sinus; protrudes into one hemisphere (sometimes bilateral). Female predominance; avg age 49.5y.
神经外科From medial greater sphenoid wing/middle-fossa floor; within dura; extremely vascular.
神经外科From sphenoid greater/lesser wings; medial = anterior clinoid; lateral = pterion; spherical; grows in all directions.
神经外科Petroclival region = sphenoid/temporal/occipital bones forming middle/posterior cranial fossae; meningioma at this site.
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