MR imaging and clinical characteristics of Lermoyez syndrome.

Background: Lermoyez syndrome (LS) is a rare auditory disorder, the details of LS remain unclear. Objectives: To investigate the grades of endolymphatic hydrops (ELH) and clinical characteristics of clinically diagnosed LS. Material and methods: Nine patients with clinically diagnosed LS were included. three-dimensional-real-infra red imaging characteristics were analyzed. ELH grades and detailed clinical characteristics were evaluated. Results: The group consisted of two women and seven men with an age at presentation of 48.4 ± 10.9 (28–61) years, an onset age of 40.9 ± 12.0 (23–58) years, and a disease duration of 7.6 ± 7.5 years. Of the nine patients, ELH was observed in 100% of the patients on the clinically affected side. In addition, 22.2% of vestibular ELH and 77.8% of cochlear ELH were classified as mild or moderate in grade. Conclusions and significance: The patients with LS had Meniere's triad, fluctuation of hearing that occurred in a reverse relationship to that of the vertiginous attack, and vestibular and cochlear ELH, which may suggest that LS is a variant of MD. However, the sex difference and milder cochlear ELH in LS compared with those in typical MD may indicate an underlying intrinsic difference in the mechanism of LS. [ABSTRACT FROM AUTHOR]