[Multiple meningioma in 53 years old woman manifested only by unilateral hearing loss]

Meningioma is the most common intracranial tumour and comprises over half of extramedullar tumours of spinal canal. The causes of meningiomas occurrence are mostly unknown. Genetic factors, hormonal disorders, injuries, viral induction and ionizing radiation may play certain role in its developing. There are several histological types of meningiomas; endothelial or syncytial--the most common form (64%), fibrilplastic--12%, anaplastic--11%, transitory--7%, angioplastic--%, psammoma--3%, angiomatous--1%, warty--very rarely. Authors have presented the case of a 53-year-old farmer treated in the Department of Otolaryngology Medical Academy in Bialystok due to lipoma located behind the ear. The lipoma was removed surgically under local anaesthesia. Post-operative course was uncomplicated. During laryngologic examination sensorineural hearing loss of left ear was established. Broaden audiologic and otoneurologic diagnostics revealed sensorineural hearing loss of left ear ranged between 20 to 80 dB when impedance was normal. Constant latent polydirectional nystagmus, pathologic vibratory test and asymmetric optokinetic nystagmus were confirmed in ENG exam. Magnetic resonance was performed as the central nervous system pathology was suspected. During the exam, 4 tumours of similar morphology located paracerebrally were fond. The tumours were bounded by wide base with dura matter and corresponded to meningiomas. After neurosurgical consultation, the patient was classified to surgical treatment. Frontotemporal dextral craniotomy was performed and partial meningiomas were removed. Post-operative course was uncomplicated. Transiently, narrowed visual field was observed. Audiologic parameters did not undergo change for the worse.