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The 3-M syndrome: risk of intracerebral aneurysm?

R F Mueller1, J Buckler, R Arthur

  • 1Department of Clinical Genetics, General Infirmary, Leeds, Belmont, Grove.

Insights

Children with 3-M syndrome may develop acute hydrocephalus due to bleeding intracranial cerebral vascular aneurysms. Regular screening for these vascular complications is recommended for affected children.

Area of Science:

  • Pediatric Neurology
  • Vascular Malformations
  • Genetic Syndromes

Background:

  • 3-M syndrome is a rare genetic disorder characterized by primordial dwarfism, facial dysmorphism, and skeletal abnormalities.
  • Cerebral vascular aneurysms are abnormal bulges in blood vessels of the brain, which can lead to rupture and hemorrhage.
  • Hydrocephalus is a condition characterized by an abnormal accumulation of cerebrospinal fluid in the brain.

Observation:

  • A pediatric patient with classic features of 3-M syndrome presented with symptoms of acute hydrocephalus.
  • Diagnostic imaging revealed the presence of two intracranial cerebral vascular aneurysms.
  • Hemorrhage from one of the aneurysms was identified as the cause of the hydrocephalus.

Findings:

  • The case highlights a potential, previously under-recognized association between 3-M syndrome and intracranial cerebral vascular aneurysms.
  • Hemorrhage from these aneurysms can precipitate acute hydrocephalus in children with 3-M syndrome.
  • This presentation underscores the critical need for vigilant monitoring of cerebrovascular health in this population.

Implications:

  • Routine screening for intracranial cerebral vascular aneurysms should be considered in children diagnosed with 3-M syndrome.
  • Early detection and management of these vascular abnormalities may prevent severe neurological complications like hydrocephalus.
  • Further research is warranted to elucidate the underlying mechanisms linking 3-M syndrome and cerebrovascular disease.

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