Subchordal Cyst Containing Non-degraded Hyaluronic Acid: A Rare Complication of Injection Laryngoplasty

Injection laryngoplasty (IL) with hyaluronic acid (HA) for the treatment of glottic insufficiency has been reported as a safe procedure with low complication rates. The side effects usually present as acute dyspnea, dysphonia, or dysphagia due to local edema, hematoma, or hypersensitivity reactions. These complications commonly resolve with minimal intervention. In the present case, we present an asymptomatic case of a subchordal cyst (SC) in a 30-year-old female after office-based injection laryngoplasty using hyaluronic acid. To the best of our knowledge, this is the first reported case of a subchordal cyst following injection laryngoplasty.