text: Yo, listen up, I got a tale to tell,
  'Bout cerebral hyperperfusion syndrome, oh hell,
  It happens when blood flow suddenly rises,
  Into the brain, causing chronic hypoperfusion surprises.
  
  Autoregulation gets impaired, it's a mess,
  Clipping aneurysms and carotid stenting, no less,
  But here's the twist, a new revelation,
  Endovascular flow diversion, causing sensation.
  
  A 52-year-old woman, she came through,
  For flow diverter treatment, that's what she'd pursue,
  A recurrent ventral paraclinoid aneurysm, it's true,
  In the left internal carotid artery, that's the clue.
  
  Post-procedure, things went awry,
  Confusion, right hemiparesis, oh my,
  Facial droop and dysarthria, she couldn't speak,
  But with blood pressure control, the symptoms would peak.
  
  Day 11 came, CT perfusion was done,
  Left hemisphere, it showed increased blood flow, son,
  Cerebral blood volume and permeability, all high,
  In that left side, they caught the eye.
  
  So now you know the story, the facts laid bare,
  Cerebral hyperperfusion syndrome, a rare affair,
  Clipping, stenting, and flow diversion at play,
  In the world of neurology, where things go astray.