16 Ventricles and Sinuses

CNS Ventricles

  • interventricular foramen aka foramen of monro

  • midbrain: cerebral aquaduct
  • pons: 4th
  • medulla: 4th

CSF

Choroid Plexus Cysts

  • trisomy 18

Hydrocephalus

Communicating Hydrocephalus

Noncommunicating Hydrocephalus

Aqueductal Stenosis

Chiari II and Myelomeningocele

Dandy Walker

Pseudotumor Cerebri

  • like HTN of ventricles

Normal pressure hydrocephalus

  • Corona radiata: compressed
  • different from pseudotumor: nl opening pressure

Hydrocephalus Exercise Vacuo

Sinus

Dural

Cavernous

  • nerves innervate eye
  • cavernous sinus syndrome: all the structures impacted

  • artery inside venous structure: instant fistula. Compression
  • Swollen eyes: edema, bulging

AV Malformation

  • similar symptoms to other mass

  • left: noncontrast
  • right: contrast