Sudden Bilateral Cochleovestibulopathy in a Patient with Anti-PD-L1 Antibody Treatment for Metastatic Non-Small Cell Lung Cancer

Background Bilateral Cochleovestibulopathy is a rare condition and in a sudden onset, it hugely affects the patients and their quality of life. There are uncommon differential diagnoses that have to be considered, one of them is meningeosis carcinomatosa.