Abstract
BACKGROUND The 22q11.2 deletion syndrome (22q11.2DS) is the most common identified microdeletion in humans. Anomalies of the vestibular system can occur with great frequency and are reported in the radiology literature. Fewer reports exist regarding vestibular function or its clinical features. CASE REPORT We present a case report of a competitive gymnast with 22q11.2DS who was noted to be having specific issues related to balance under conditions of competition, specifically on the balance beam. Comprehensive balance assessment provided evidence of the absence of lateral semicircular canal function, correlating with computed tomography findings and her symptoms. Counselling and targeted training greatly improved her performance. CONCLUSIONS Comprehensive balance testing correlated with clinical and radiographic findings in a competitive gymnast with 22q11.2DS. Results demonstrated the functional aspect of this anomaly but also displayed the extent to which the complex interactions of all components of balance can work together to overcome balance issues under intense vestibular stress.