Van Beck J, Chinnadurai S, Morrison AK, et al. - Experts aspired to explore whether the size of the audiometric air-bone gap (ABG) was associated with the size of the vestibular aqueduct in the pediatric population utilizing three vestibular aqueduct measurements. These involved the fundus, midpoint, and porous widths of the vestibular aqueduct. This investigation was carried out at a tertiary care referral center. Participants in the study were 55 children with a confirmed diagnosis of unilateral or bilateral enlarged vestibular aqueduct (EVA) as determined by prior imaging of the inner ear. Using Pearson correlation coefficients, associations of EVA measurements with ABGs at 0.5 and 1 kHz were assessed. During audiometric testing, ABGs measured correlate with the size of the EVA and ABGs can be clinical predictors of the severity of the bony abnormality. The third window theory of conductive hearing loss in pediatric EVA was supported in this retrospective cohort study.