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7 y/o, Upper Limb Weakness

7 y/o, Upper Limb Weakness

  • Symptoms started gradually after the accident, including problems holding objects in his left hand and no curiosity to use left hand.
  • Figure 1. T2WI coronal.
  • Figure 2. Fat suppressed T2WI sagittal.
  • Figure 3. Fat suppressed T2WI axial.
  • Figure 4. T1WI axial.
  • Diagnosis: Traumatic pseudomeningocele with nerve root avulsion
  • There is a loss of power in the left upper extremity with 1/5 grade.
  • There is inability to identify left-sided nerve roots. Few septae-like structures are noted within the cystic lesions which may represent segments of avulsed nerve roots.
  • Pseudomeningoceles represent a tear in the meningeal sheath that surrounds the nerve roots and extravasation of CSF into the neighboring tissues.
  • Most common location is dorsal to thecal sac at lumbar laminectomy site.
  • Differential diagnosis includes arachnoid cyst.

Case History: 7-year-old male with left upper limb weakness that started two years following a motor vehicle accident.


Injury of the left brachial plexus

Joseph @

Possibility of left brachial plexus injury to be considered.

siva @

Possibility of left brachial plexus injury to be considered.

siva @

Nerve toot avulsion

Richard @

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