• A case of posttraumatic endolymphatic hydrops that was confirmed by a positive glycerin test is reported. Although head trauma has been implicated as a cause of hydrops, few such cases are reported in the literature. Careful consideration of perilymphatic fistula must be accorded before a diagnosis of posttraumatic hydrops is made.
Clark SK, Rees TS. Posttraumatic Endolymphatic Hydrops. Arch Otolaryngol. 1977;103(12):725–726. doi:10.1001/archotol.1977.00780290061007