Tuesday, September 27, 2016


A 50 year old smoker comes in with severe headache, altered mentation, and this CT scan. He goes to interventional radiology for a procedure. Over the next several days, he slowly improves. A week later, though, he suddenly gets worse. He becomes more confused and somnolent. CT and EEG do not explain his neurologic exam. Ultrasound confirms the diagnosis.

Challenge: What do you suspect?

Image shown under Fair Use.

1 comment:

Craig Chen said...


This is vasospasm and delayed cerebral ischemia seen 3-21 days after a subarachnoid hemorrhage. Transcranial doppler can be used to identify potential vasospasm.

Source: UpToDate; openi.nlm.nih.gov.