title: Isolated Mammillary Body Infarct Causing Global Amnesia: A Case Report.
abstract: OBJECTIVE
  Mamillary bodies play an important role in human memory and emotions. Vascular lesions causing an isolated mammillary body lesion without affecting the surrounding structures are very rare.
  
  
  METHODS
  A 53-year-old male was brought to the emergency department with acute-onset memory problems suggestive of partial anterograde and retrograde amnesia.
  
  
  RESULTS
  Magnetic resonance imaging revealed an isolated left mammillary body infarct sparing adjacent structures.
  
  
  CONCLUSIONS
  Mamillary bodies play an intrinsic role in memory formation and retrieval rather than acting as relay-only station for hippocampal projections. Non-hippocampal input from the limbic midbrain via the ventral tegmental nucleus of Gudden could be contributing to its function.
authors.affiliation: Department of Neurology, University of Tennessee Health Science Center, Memphis, Tennessee.
authors.forename: Shailesh
authors.initials: S
authors.lastname: Male
authors.affiliation: Department of Neurology, University of Tennessee Health Science Center, Memphis, Tennessee; Department of Neurology, Geisinger Medical Center, Danville, Pennsylvania. Electronic address: rzand@geisinger.edu.
authors.forename: Ramin
authors.initials: R
authors.lastname: Zand
mesh_terms: D000647:Amnesia / Q000000981:diagnostic imaging / Q000209:etiology*; D020520:Brain Infarction / Q000150:complications* / Q000000981:diagnostic imaging; D006801:Humans; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging; D008297:Male; D008326:Mammillary Bodies / Q000000981:diagnostic imaging / Q000473:pathology*; D008875:Middle Aged
keywords: Mammillary body; amnesia; infarct; magnetic resonance imaging; mamillothalamic tract