title: Transient changes on brain magnetic resonance imaging in a patient with sturge-weber syndrome presenting with hemiparesis.
abstract: BACKGROUND
  Stroke-like episodes associated with Sturge-Weber Syndrome have previously been attributed to thrombosis within the leptomeningeal malformation causing infarction.
  
  
  METHODS
  A 22-year-old woman with a right-sided port-wine nevus presented with acute left hemiparesis. Brain magnetic resonance imaging (MRI) demonstrated a vascular malformation of the right cerebral hemisphere consistent with Sturge-Weber Syndrome. There was mild edema of the right hemisphere cortex. While in hospital she developed recurrent complex partial seizures. Repeat brain MRI showed a diffusion abnormality affecting the right hemisphere with an increase in the degree of edema. There was no evidence of thrombosis on cerebral angiography. The patient's neurologic deficit and acute MRI changes subsequently resolved.
  
  
  CONCLUSIONS
  Although cerebral angiography could potentially demonstrate thrombosis causing large vessel obstruction, it is unlikely to have the resolution to detect stasis at a microvascular level. Microcirculatory stasis with reversible ischemia is the likely pathogenic mechanism in this case.
authors.affiliation: Royal Adelaide Hospital, Adelaide, South Australia, Australia. kkumaradel@hotmail.com
authors.forename: Kishore R
authors.initials: KR
authors.lastname: Kumar
authors.forename: Kenneth
authors.initials: K
authors.lastname: Hon
authors.forename: David
authors.initials: D
authors.lastname: Schultz
authors.forename: Mark J
authors.initials: MJ
authors.lastname: Agzarian
authors.forename: David Neil
authors.initials: DN
authors.lastname: Jones
authors.forename: Dominic
authors.initials: D
authors.lastname: Thyagarajan
mesh_terms: D001921:Brain / Q000000981:diagnostic imaging / Q000473:pathology*; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods*; D010291:Paresis / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology*; D049268:Positron-Emission Tomography / Q000379:methods; D013341:Sturge-Weber Syndrome / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology*; D055815:Young Adult