Meniere's disease: peripheral or central origin. A neuroanatomical study

Area of Science:

• Neuroscience
• Otolaryngology
• Pathology

Background:

• Meniere's disease etiology debated, involving endolymphatic hydrops and potential central nervous system changes.
• Neuropsychological studies suggest disease centralization, primary or secondary.

Observation:

• Examined temporal bones and brains of 4 Meniere's disease patients.
• Assessed endolymphatic hydrops, ganglion cell degeneration, brainstem structures, vessels, and leptomeninges.
• Investigated glial cells, myelin sheaths, axons, atherosclerosis, and fibrosis.

Findings:

• Endolymphatic hydrops and ganglion cell degeneration observed in temporal bones.
• Brain autopsies revealed no central pathoanatomical lesions supporting Meniere's disease symptoms.

Implications:

• Findings do not support central nervous system lesions as the cause of Meniere's disease.
• Further research may be needed to fully understand the complex etiology of Meniere's disease.