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Aetiology by frequency

Authoring team

In order of frequency, velopharyngeal insufficiency commonly is due to the following causes:

  • repaired or overt cleft palates
  • neurological conditions
  • submucous cleft palate
  • post-adenoidectomy or adenoid hypoplasia
  • tonsillar hypertrophy
  • post-tumour resection or radiotherapy

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