Chen Q, et al. - Researchers investigated the predictive risk factors for complications associated with migrating fish bones in the surrounding tissue of upper gastrointestinal tract via retrospectively analyzing 45 cases of buried fish bones in the surrounding tissue of upper gastrointestinal tract with complications over 12 years. People varied in terms of experiencing consequences of fish bones migrating outside the upper gastrointestinal tract. Length (> 2 cm), diabetes mellitus, medium or heavy pain, dysphagia, and duration of significant symptoms (> 7 days) were identified to be the independent risk factors for complications.