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Multiple presentation of mitochondrial disorders.

A Nissenkorn1, A Zeharia, D Lev

  • 1Pediatric Neurology Unit and Metabolism Clinic, Wolfson Medical Center, Holon, Israel.

Archives of Disease in Childhood
|August 18, 1999
PubMed
Summary
This summary is machine-generated.

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Mitochondrial disorders in children often present with complex neurological symptoms and multi-system involvement, not always with typical signs like lactic acidosis. Early evaluation is crucial for accurate diagnosis in pediatric cases.

Area of Science:

  • Pediatric Neurology
  • Metabolic Disorders
  • Neurogenetics

Background:

  • Mitochondrial disorders are a group of heterogeneous genetic conditions affecting cellular energy production.
  • Clinical presentations in children can be diverse and challenging to diagnose.
  • Early identification is critical for management and intervention.

Purpose of the Study:

  • To analyze the varied clinical manifestations of pediatric mitochondrial disorders.
  • To identify key diagnostic indicators in children evaluated at a specialized clinic.

Main Methods:

  • Retrospective chart review of 36 children with suspected mitochondrial disorders.
  • Inclusion based on clinical suspicion and laboratory criteria.
  • Analysis of neurological and systemic involvement.

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Main Results:

  • 31 children were diagnosed with mitochondrial disorders; 5 had probable diagnoses.
  • All patients exhibited nervous system involvement.
  • Multisystemic dysfunction was common, affecting gastrointestinal (20), sensory organs (15), endocrine (9), cardiovascular (5), urinary (4), and hematopoietic (4) systems.
  • Typical markers like severe lactic acidosis or ragged red muscle fibers were infrequent.

Conclusions:

  • Mitochondrial disorders in children frequently present with complex neurological symptoms and multisystemic involvement.
  • The absence of classic signs should not preclude consideration of mitochondrial disorders.
  • Evaluation is recommended for children with complex neurological or multisystemic conditions.