No abstract available.
Endolymphatic Hydrops*

No abstract available.
Dehydration ; Endolymphatic Hydrops

Meningioma's account for around 15% of all primary brain tumors with some 10% of meningiomas arising in the posterior fossa. In rare cases, a meningioma can form around the endolymphatic sac. When formed in the posterior fossa, meningioma tumors can produce vague, non-specific vertiginous symptoms. Research has observed that a subset of these lesions could produce symptoms indistinguishable from those of Meniere's disease. Therefore, we described the clinical features of a case of posterior petrous meningioma with recurrent vertigo as well as the substantial resolution of symptoms after tumor removal via transmastoid approach.
Brain Neoplasms ; Endolymphatic Hydrops ; Endolymphatic Sac ; Meniere Disease ; Meningioma ; Vertigo

Tumarkin's otolithic crisis refers to drop attacks of vestibular origins. It usually occurs without warning in patients with late or end-stage endolymphatic hydrops. However, drop attacks of vestibular origins may occur in patients without otologic deficit. We report a patient with Tumarkin's otolithic crisis from delayed endolymphatic hydrops. The careful delineation of drop attacks in patients with vertigo can provide appropriate therapeutic options for patients with this potentially dangerous condition.
Endolymphatic Hydrops ; Humans ; Otolithic Membrane* ; Syncope ; Vertigo

Endolymphatic Hydrops ; Hearing Loss, Sudden ; Humans

Endolymphatic sac tumor (ELST) is a very rare tumor arising from the epithelium of the endolymphatic sac. Pathologically, ELST shows papillary growth patterns with extensive bony and soft tissue destruction. ELST commonly shows symptoms of endolymphatic hydrops such as hearing loss, vertigo and tinnitus by blocking the endolymphatic duct. As the tumor enlarges, patients experience various symptoms that include multiple cranial nerve palsy. Ten to thirty percents of ELST are related to Von Hippel Lindau (VHL) diseases. Also, bilateral tumors can develop when a patient has VHL-related ELST. The goal of treatment for ELST is total tumor eradication. The type of surgical approach is chosen by the surgeon in consideration of the tumor grade and the hearing status of the patient. In this report, we present a patient with ELST who was successfully treated with the modified translabyrinthine approach. We have also reviewed relevant literatures.
Cranial Nerve Diseases ; Endolymphatic Duct ; Endolymphatic Hydrops ; Endolymphatic Sac ; Epithelium ; Hearing ; Hearing Loss ; Humans ; Tinnitus ; Vertigo

Author divided the history of Meniere's disease into a three part based on two important historical affairs, the novel concept of Prosper Meniere which reported in 1861, and the discovery of temporal bone histopathology of endolymphatic hydrops by Hallpike and Yamakawa in 1938. This article traces the period since Prosper Meniere's report until discovery of endolymphatic hydrops.
Endolymphatic Hydrops* ; History of Medicine ; Meniere Disease* ; Temporal Bone

BACKGROUND AND OBJECTIVES:Electrocochleography is the only proven investigation and diagnostic tool to demonstrate the endolymphatic hydrops at this time. We designed this study to assess the characteristics of transtympanic electrocochleographic findings and to estimate the clinical value of the test results in the patients with Meniere's disease. MATERIALS AND METHOD:Electrocochleographic duration and amplitude were measured in a clinically defined definite Meniere's disease group and the results were compared with those from a normal hearing control group. RESULTS:The summating potential (SP)/action potential (AP) amplitude ratio was significantly different among study groups with 0.40+/-.10 in the bilateral Meniere's group, 0.34+/-.08 in the unilateral Meneire's group and 0.22+/-.08 in the normal group (p<0.01). The elevated SP/AP ratio in the patients with such a relatively long duration of Meniere's disease in this study was mainly due to the decreased AP amplitude rather than the enhanced SP amplitude. CONCLUSION:Measuring electrocochleography and demonstrating the elevated SP/AP ratio could be quite valuable to diagnose the patients with Meniere's disease. The recognition of decreased AP amplitude might be helpful to understand the cochlear pathologic status in the patients with Meniere's disease.
Audiometry, Evoked Response* ; Endolymphatic Hydrops ; Hearing ; Humans ; Meniere Disease*

The etiology and pathophysiology of Meniere's disease (MD) remain controversial and incompletely understood. Diagnosis of MD is decided according to the diagnostic criteria proposed by the American Academy of Otolaryngology-Head and Neck Surgery (AAO) (1995), which is based on clinical symptoms. It would be of great value to have an objective clinical test for the diagnosis of endolymphatic hydrops. Various tests like electrocochleography, vestibular evoke myogenic potential and cochlear hydrops analysis masking procedures have been applied for detecting endolymphatic hydrops. Any of single objective tests is not perfect for the diagnosis of MD. However, considering AAO guideline is not enough for the diagnosis, additive objective tests for MD become essential. We evaluated the objective tests for MD and also surveyed preferred tests among Korean otologic society members.
Audiometry, Evoked Response ; Edema ; Endolymphatic Hydrops ; Masks ; Meniere Disease ; Neck

There are only a few reports of post-traumatic Meniere's disease and there is few literature that contains detailed data associated with the disease. We report a case of post-traumatic Meniere's disease. He suffered from tinnitus, fluctuating sensorineural hearing loss, and recurrent vertigo. Symptomatic medical treatment was not helpful and neither was soft tissue plugging around the oval and round windows during exploratory tympanotomy. Three months after soft tissue plugging, endolymphatic sac decompression surgery was performed. The patient's symptoms improved markedly thereafter. The clinical significance of post-traumatic Meniere's disease is described and we present a brief review of the literature.
Decompression ; Endolymphatic Hydrops ; Endolymphatic Sac ; Hearing Loss, Sensorineural ; Meniere Disease* ; Tinnitus ; Vertigo