The document discusses lateral sinus thrombosis, also known as lateral sinus thrombosis or Otogenic suppurative thrombophlebitis, which is defined as the simultaneous presence of venous thrombosis and suppuration in the intracranial cavity. It is most commonly caused by b-hemolytic streptococcus and symptoms include nausea, vomiting, toxic and restless behavior, deep boring ear pain, and foul smelling blood tinged ear discharge. Management involves imaging, lumbar puncture of CSF to analyze volume, rate of formation, and composition.

1. Lateral sinus
thrombosis
Dr vivek malpani
Ent resident
Nims medical college

9. • Sss =
sup
sagital
sinus

11. • Audio video

12. Lateral venous thrombophlebitis
• Also known as lateral sinus thrombosis or Otogenic suppurative
thrombophlebitis.
• It is defined as the simultaneous presence of venous thrombosis and
suppuration in the intracranial cavity.
• Because the sinus is a continuation of the cerebellar dura
mater, extension of an infection by only a few millimeters can
result in meningitis, epidural abscess, subdural empyema,
cerebritis, or cerebellar abscess.
• most commonly Caused by b-hemolytic streptococcus,

17. Initially mild due to perisinus abscess
Later severe due to raised ICP

18. • Nausea,vomiting
• Toxic and restless patient
• Otalgia (deep boring ear pain)
• Foul smelling blood tinged ear discharge.

20. signs

22. management
• Imaging and lumber puncture

24. csf
• Total volume:150ml
• Rate of formation:500-600ml/day
• Formation of CSF is 50-70% : choroid plexuses and 30-50%:
50%: blood vessels along the ventricular wall and absorbed by
by arachnoid villis into the dural venous sinus.
• It is Clear, colorless, alkaline fluid with Specific gravity of 1.005
1.005 to 1.008. and pH of 7.33.