Related Experiment Video
Updated: Feb 13, 2026

P50 Sensory Gating in Infants
Published on: December 26, 2013
Stridor caused by a blue laryngeal mass in an infant: case report
Insights
A rare blue laryngeal mass caused inspiratory stridor in an infant. This pressure-dependent postcricoid mass was diagnosed via flexible endoscopy and confirmed by its unique visibility during crying.
Area of Science:
- Pediatric Otolaryngology
- Neonatal Airway Disorders
- Diagnostic Endoscopy
Background:
- Infantile stridor can indicate serious upper airway obstruction.
- Laryngeal masses in neonates are uncommon and require prompt diagnosis.
- The differential diagnosis for neonatal stridor includes various congenital and acquired lesions.
Abstract:
Stridor caused by.a blue laryngeal mass in an infant: case report. We describe an infant who had inspiratory stridor that began a few weeks after birth. Flexible upper airway endoscopy while the infant was awake showed a large blue mass at the posterior glottis, above the esophageal inlet. The lesion was only visible upon crying or coughing; it was undetectable when we examined the infant in the supine position during spontaneous breathing and did not respond to systemic treatment with propranolol. Based upon these typical features, we established a diagnosis of pressure- dependent postcricoid mass.
Related Concept Videos
Data Reporting and Recording
Atomic Mass
Types of Reports I: Hands-off Report
Following are the key components and categories of hand-off reports:
Purpose and Process:
Drug Dosing: Infants and Children
Molar Mass
Types of Reports II: Incident or Occurrence Report
Purposes:
In the healthcare industry, reports play a crucial role in documenting incidents within an agency. The primary objective of these reports is to ensure patient safety, uphold the...

