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ORPHA:2372Malformation syndrome
What it is
A rare congenital laryngeal anomaly characterized by an abnormal dilation of the laryngeal saccule that is filled with air, maintains communication with the laryngeal lumen, and is either confined to the false vocal fold or extends upward, protruding through the thyrohyoid membrane to the neck. Symptoms may include cough, hoarseness, stridor, sore throat and uni- or bilateral swelling of the neck. Blockage of the laryngocele neck can result isn laryngomucocele, and forms laryngopyocele when infected.
Key facts
- Prevalence
- <1 / 1 000 000 (annual incidence)
- Age of onset
- All ages
- Classified as
- Malformation syndrome
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
ICD-10 codes
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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