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Updated: Aug 18, 2026

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring
Published on: December 14, 2020
Predictive value of laryngeal pseudosulcus for gastroesophageal reflux in pediatric patients
Michele M Carr1, Usamah Abu-Shamma, Linda S Brodsky
1Department of Otolaryngology/Head and Neck Surgery, Pennsylvania State University and Milton S. Hershey Medical Center, H091, 500 University Drive, P.O. Box 850, Hershey, PA 17033-0850, USA. mcarr@psu.edu
Objective:
To determine if the presence of laryngeal pseudosulcus is a good predictor of reflux in children.
Methods:
A retrospective review of clinical photographs of 66 children undergoing direct laryngoscopy for airway symptoms for the presence of laryngeal pseudosulcus. Its presence was correlated with positive reflux tests: 24 h pH monitoring, gastric scintiscan, barium swallow, and esophageal biopsy.
Results:
Fifty-six patients had a positive reflux test, and 89% of these had pseudosulcus. Seventy percent of the reflux-negative group (N=10) had no pseudosulcus. Sensitivity and specificity were 89% and 70%, respectively.
Conclusions:
On its own the presence of pseudosulcus has marginal predictive use, but it is found more frequently among reflux-positive children and may be a useful marker to add to existing visual scoring systems.
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