ABSTRACT
Posterior fossa meningioma located on the endolymphatic sac may present Meniere's disease-like symptoms possibly due to endolymphatic hydrops by tumor compression. A 70-year-old woman presented with recurrent vertigo and combined hearing loss that had lasted for 6 years. She had been diagnosed as left-sided posterior fossa meningioma with a maximum diameter of 20.3x7.7x12 mm about 10 years ago and had been followed up regularly. Since then she was found with a slightly increased tumor and thus referred to our department for the treatment of intractable recurrent vertigo accompanying Tumarkin attacks with secondary head trauma. Since pharmaceutical treatment was not effective, intratympanic gentamicin was repeatedly injected. After successful ablation of vestibular function, no further recurrence of vertigo or Tumarkin attack was reported. This case illustrates that posterior fossa meningioma can be intimately involved with endolymphatic sac and present symptoms and signs suggestive of endolymphatic hydrops.