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Full-Endoscopic Surgery for Hypothalamic Hamartoma Resection
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Pediatric Hirayama disease.

Takatoshi Hosokawa1, Mikiya Fujieda, Hiroshi Wakiguchi

  • 1Department of Pediatrics, Kochi Medical School, Kochi University, Kohasu Okou-Cho, Nankoku, Kochi 783-8505, Japan. hosot@kochi-u.ac.jp

Pediatric Neurology
|July 9, 2010
PubMed
Summary
This summary is machine-generated.

Hirayama disease, a rare condition causing muscle wasting in the arm, was effectively managed in a 16-year-old girl using a cervical collar. Early diagnosis and intervention with this non-invasive treatment improved hand strength.

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Area of Science:

  • Neurology
  • Musculoskeletal Disorders
  • Medical Imaging

Background:

  • Hirayama disease is a rare, self-limiting motor neuron disorder affecting the distal upper extremity.
  • It typically presents in adolescents with insidious onset of weakness and atrophy, primarily in the hands.

Observation:

  • A 16-year-old female presented with progressive weakness and wasting in her right hand, accompanied by cold paresis but no sensory deficits.
  • Nerve conduction studies showed reduced compound muscle action potentials in the ulnar and median nerves, with normal conduction velocities.
  • F-wave studies revealed reduced frequency and prolonged minimum latency in the ulnar nerve.

Findings:

  • Cervical spinal cord MRI revealed abnormal anterior horn signal intensity, lower cervical cord atrophy, and a forward shift of the cord during neck flexion.
  • Flow voids in the epidural space were also noted, consistent with the characteristic findings of Hirayama disease.

Implications:

  • Early diagnosis of Hirayama disease by pediatric neurologists is crucial for timely intervention.
  • The use of a cervical collar demonstrated significant improvement in hand strength, highlighting its therapeutic potential.
  • This case underscores the importance of recognizing Hirayama disease for prompt and effective management, preventing further neurological decline.