Neurodegeneration with brain iron accumulation on MRI: An adult case of α-mannosidosis

Research output: Chapter in Book/Report/Conference proceedingBook chapter


Case: A 34-year-old woman was referred to our hospital with progressive movement disorders and neurodegeneration with brain iron accumulation and enlargement of the frontal diploe on the MRI. Metabolic testing revealed that she had α-mannosidosis (AMD), a lysosomal storage disorder. Background: AMD is a rare genetic disorder that causes α-mannosidase deficiency resulting in lysosomal accumulation of undigested oligosaccharides. The symptoms of AMD consist of facial and skeletal deformities combined with progressive psychiatric and neurological complaints, especially ataxia and mental retardation. Bilateral patellar dislocation and hearing impairment are frequent. Discussion: The movement disorders we found in our patient have not been reported previously, but they are likely late symptoms of this progressive disorder. The iron deposits in the basal ganglia have also not been reported in AMD and are yet of unknown significance. Lysosomal storage disorders, such as AMD, should be considered in patients with progressive neurologic conditions and neurodegeneration with brain iron accumulation on MRI.


External organisations
  • Academic Medical Center of University of Amsterdam (AMC)
  • University Medical Center Utrecht
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Psychiatry


  • Basal ganglion, Iron accumulation, Lysosomal storage disease, Lysosomal storage disorder, Spinocerebellar ataxia
Original languageEnglish
Title of host publicationJIMD Reports
PublisherSpringer Gabler
Number of pages4
Publication statusPublished - 2012 Jan 1
Publication categoryResearch
Externally publishedYes

Publication series

NameJIMD Reports
ISSN (Print)2192-8304
ISSN (Electronic)2192-8312