1. CNS Case Discussion 365 RAD

3. Intracranial Bleeding Extradural Extradural Subdural Subdural Subarachnoid Subarachnoid Intraventricular Intraventricular Intraparenchymal Intraparenchymal

5. EDH Blood collection between inner table and dura. Blood collection between inner table and dura. Biconvex (lentiform) Biconvex (lentiform) Occur at site of impact Occur at site of impact 95% unilateral, supratentorial 95% unilateral, supratentorial Does not cross sutures Does not cross sutures Can cross falx and tentorium Can cross falx and tentorium Skull fracture in 90% Skull fracture in 90% Air seen in 20% Air seen in 20%

6. EDH Arterial 90%, Venous 10% Arterial 90%, Venous 10% Nontraumatic-rare Nontraumatic-rare Lucid interval-50% Lucid interval-50% C/F: headache, nausia, vomiting, convulsions, herniation. C/F: headache, nausia, vomiting, convulsions, herniation.

7. SDH

8. SDH Blood collection between dura and arachnoid. Blood collection between dura and arachnoid. Crescent shape Crescent shape Supratentorial Supratentorial Cross sutures, but not dural attachments Cross sutures, but not dural attachments May extend along falx and tentorium May extend along falx and tentorium

9. SDH Trauma is the most common cause Trauma is the most common cause Acute: 6hr-3d Acute: 6hr-3d Subacute: 3d-3w Subacute: 3d-3w Chronic: >3w Chronic: >3w

10. SDH

11. SDH

15. SAH Blood between pia and arachnoid Blood between pia and arachnoid Traumatic (most common) Traumatic (most common) Nontraumatic Nontraumatic C/F: headache, vomiting, blurred vision, neck rigidity C/F: headache, vomiting, blurred vision, neck rigidity Complications: hydrocephalus (acute/delayed), vasospasm, rebleeding. Complications: hydrocephalus (acute/delayed), vasospasm, rebleeding.

18. Parenchymal bleed Causes: Causes: HTN, trauma, AVM, aneurysm, permaturity, tumors, infarction, coagulopaty.

19. Trauma

22. Osborn AG

33. Intracranial herniations Subfalcine Subfalcine Transtentorial Transtentorial Unilat/Bilat Unilat/Bilat Osborn AG

34. Intracranial herniations

35. Brain edema 3w later

40. Intracranial bleeding Brain infarctions Brain edema/herniation

41. "The greatest things ever done on earth have been done little by little."