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Intracranial cysts - Coggle Diagram

- - - - symptoms
        
        may be large, temporal lobe compressed
        
        moderate: size found in later childhood/adolescence - no treatment necessary
        
        most common manifestations: large head, temporal bossing
        
        Increased intracranial pressure: headache, papilloedema, focal seizures, haemorrhagic complications - head CT may visualize only subdural hematoma
        
        frequently asymptomatic, incidental finding
      - treatment
        
        surgery needed: symptoms of increased IC pressure
        
        fenestration into basal cisterns
        
        cystoperitoneal shunt
        
        drainage through fontanelles?
      - differential diagnosis
        
        large temporal porencephalic cyst
        
        bilateral cyst: glutaric aciduria type I - atrophy of temporal lobe
    - - symptoms
        
        90%hydrocephalus
        
        visual abnormalities
        
        ataxia
        
        bobble-head doll syndrome: anteroposterior head nodding 2-3 Hz
        
        partial hypopituitarism
      - treatment: endoscopic fenestration info the ventricule and then into the prepontin cistern
    - - symptoms
        
        focal signs
        
        increased IP
      - differential diagnosis
        
        interhemispheric cyst vs corpus callosum agenesis+dorsal cyst - dysembrioplastc with cuboid or columnar epithelium
  - - - macrocephaly
      - hydrocephalus
      - mass in the posterior fossa
    - - cyst of incisura
        
        location: supra + infratentorial, anterior to vermis + posterior to pineal region + above quadrigeminal plate
        
        hydrocephalus + Perineaud syndrome +ataxia
      - mesencephalic, 3rd ventricule cysts: secondary to arachnoiditis caused by thalamic haemorrhage/bacterial ventriculitis
      - behind cerebellum/supracelebellar/laterocerebellar/cerebellopontine angle