Cerebral hemorrhages
Thanks einham23 for such a nice post
Let me explain the differences further and also some mention some other hemorrhages as they are all high yield in USMLE
Subdural Hemorrhage:
Epidural Hemorrhage:
Basal Skull Fractures:
Subarachnoid Hemorrhage:
Intracerebral Hemorrhage:
Thanks einham23 for such a nice post
Let me explain the differences further and also some mention some other hemorrhages as they are all high yield in USMLE
Subdural Hemorrhage:
- Ruptured bridging veins
- Acute or chronic [example of chronic is child abuse]
- Crescentic shadow in CT scan [as seen above] which may show dark and white attenuation if old or new respectively [also seen in above CT scan]
Epidural Hemorrhage:
- Always traumatic [see the overlying subcutaneous hematoma in the image above] sometime skull fracture also seen, therefore usually acute history not chronic
- Caused by tear of dural arteries and most commonly middle meningeal artery
- Lucid interval is seen in the history
- Lenticular (biconvex) appearance in CT scan [see image above]
Basal Skull Fractures:
- Raccoon eyes: periorbital ecchymosis.
- CSF rhinorrhea
- Battle's sign: delayed ecchymosis over the mastoid process
- Hemotympanum: blood seen through the tympanic membrane
Subarachnoid Hemorrhage:
- "Worst headach of my life"
- Ruptured Berry aneurysm
Intracerebral Hemorrhage:
- Seen in Hypertension, Bleeding tendency, Cerebral amyloid angiopathy, Cocaine or amphetamines
