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Updated: May 23, 2026

Minimally Invasive Murine Laryngoscopy for Close-Up Imaging of Laryngeal Motion During Breathing and Swallowing
Published on: December 1, 2023
[The state of the larynx in children following repeated and recurrent croup]
Insights
Recurrent pediatric croup often requires hospitalization. Endoscopic and virological exams in children with recurring croup revealed chronic laryngitis, vocal cord nodules, and functional dysphonia, but findings did not correlate.
Area of Science:
- Pediatric Emergency Medicine
- Otolaryngology
- Infectious Diseases
Context:
- Obstructive laryngitis and laryngotracheitis are common pediatric emergencies.
- These conditions account for up to 6% of pediatric hospital admissions.
- Recurrent croup presents diagnostic challenges in children.
Purpose:
- To investigate the findings of endoscopic and virological examinations in children with recurrent croup.
- To explore the correlation between endoscopic findings and viral infections in these patients.
Summary:
- This study examined children with recurrent croup, frequently caused by respiratory syncytial and parainfluenza viruses.
- Endoscopic evaluation revealed chronic laryngitis (42%), subacute laryngitis (16%), vocal cord nodules (30%), and functional dysphonia (12%).
- Crucially, endoscopic and virological findings showed no correlation in this pediatric cohort.
Impact:
- Highlights the complexity of recurrent croup in children.
- Suggests that viral etiology alone may not explain all observed laryngeal changes.
- Informs differential diagnosis and management strategies for pediatric obstructive airway conditions.
Abstract:
The obstructive forms of laryngitis and/or laryngotracheitis are the emergency conditions in the pediatric practice that frequently necessitate hospitalization of the affected patients. According to R.J. Rosychuk and co-workers, such patients make up to 6% of the total number of children admitted to stationary clinics. The authors discuss the problem of recurrent catarrhal croup in the children and its differential diagnosis from other diseases. The results of endoscopic and virological examination of the children with repeated or recurring croup are discussed. The children of this group most frequently present with infections by respiratory syncytial and parainfluenza viruses. The endoscopic examination has revealed various forms of chronic laryngitis in 21 (42%) children, subacute (including reactive) laryngitis in 8 (16%), and the developing nodules in the vocal cords of 15 (30%) patients. Six (12%) patients experienced a change of the quality of voice in the absence of structural alterations in the larynx (functional dysphonia). It is concluded that the results of endoscopic and virological examination do not correlate with one another.
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