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Otologic features in children with primary ciliary dyskinesia.

Virginie Prulière-Escabasse1, Andre Coste, Pierre Chauvin

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Middle ear disease in primary ciliary dyskinesia (PCD) remains severe in children despite antibiotics, improving after age 18. Central complex defects indicate greater severity in PCD patients.

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Area of Science:

  • Otolaryngology
  • Genetics
  • Pediatrics

Background:

  • Primary ciliary dyskinesia (PCD) is a genetic disorder affecting cilia function.
  • Otologic manifestations are common in PCD but require detailed analysis across age groups.
  • Understanding the correlation between ciliary ultrastructural defects and otologic severity is crucial for management.

Purpose of the Study:

  • To analyze otologic features in pediatric patients with primary ciliary dyskinesia (PCD).
  • To evaluate the correlation between specific ciliary ultrastructural defects and the severity of otologic conditions in PCD patients aged 0-18 years.

Main Methods:

  • Retrospective study at a pediatric referral center.
  • Evaluation of 58 PCD patients across four age intervals: preschool, school-aged, teenagers, and young adults.
  • Analysis of otologic outcomes including acute otitis media, otitis media with effusion, otorrhea, hearing loss, and middle ear surgery, correlated with ultrastructural defects (outer dynein arm, inner dynein arm, central complex).

Main Results:

  • Recurrent acute otitis media and otorrhea significantly decreased with age, particularly after 18 years.
  • Otitis media with effusion was more severe in younger age groups (preschool to teenagers).
  • Central complex defects were identified as a significant marker for increased severity of otologic features across all evaluated criteria.

Conclusions:

  • Otologic conditions in PCD patients remain severe throughout childhood, with notable improvement observed only after 18 years of age.
  • Continuous antibiotic therapy showed limited benefit in improving the middle ear condition during childhood.
  • Central complex ciliary defects serve as a key indicator of disease severity in pediatric PCD patients.