This JAMA Diagnostic Test Interpretation article by Paul and Roland presents the case of a 35-year-old woman with progressive right-sided hearing loss—without tinnitus, vertigo, otorrhea, otalgia, or facial weakness. The patient’s history was negative for ear infections, excessive noise exposure, or ear or head trauma. Otoscopic examination was normal. Tuning fork examination revealed left-sided lateralization and air greater than bone conduction, bilaterally. How would you interpret the audiogram results?