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An epidemiological survey on vestibular neuronitis in Japan was conducted by means of a questionnaire filled in by major neuro-otology clinics (otolaryngologists) during 1988-1990 (3 years). The diagnostic criteria of vestibular neuronitis settled on in 1986 by the Standardization Committee of the Japan Society of Equilibrium Research were applied. Gross(More)
Progress of caloric response and subjective symptoms of 60 patients with vestibular neuronitis was evaluated by a long term follow-up study. Normalization of caloric responses was confirmed in 25 (41.7%) out of 60 patients, 20 of whom had recovered within 2 years of the onset of vertigo. The rate of the patients with canal paresis was about 90% after 1(More)
We investigated the morphological maturation of the vestibular ganglion and its dendrites terminating in the sacculus of the chick embryo. The cytoplasm of the ganglion cells had acquired a granular feature due to the abundance of ribosomal clusters and rER by the 13th day of incubation. The myelination of the dendrites occurred before that of the(More)
Leiomyoma occurrence in the head and neck is rare. Vascular leiomyoma usually occurs in the skin of the limbs. Survey of the literature also revealed that there was no case of vascular leiomyoma in the parotid gland reported in Japan. A 50-year-old man with vascular leiomyoma which developed from the parotid gland was reported. The chief complaint of this(More)
Recent advances in magnetic resonance imaging (MRI) have demonstrated facial nerve enhancement in facial nerve palsy and cochlea enhancement in sudden deafness. However, no report has described the findings of enhanced MRI in vestibular neuronitis. Eight cases of vestibular neuronitis were studied with enhanced MRI. We did not detect any enhanced lesions of(More)
Utricular otoconia of the chick embryos incubated under continuous 2G load were examined under a scanning electron microscope. Morphological changes were confined to the process of otoconial formation and the otoconial size. Otoconial formation was remarkably delayed in the utricle of 2G centrifuged chick embryo. Giant otoconia, which sometimes amounted to(More)
The distribution of protein gene product (PGP) 9.5 was analyzed in the human fetal cochlea using the indirect immunofluorescence method. In the 12- and 14-week-old human fetuses, the cells of the greater epithelial ridge and the lesser epithelial ridge were overall labelled with PGP 9.5, while the stria vascularis and the Reissner's membrane did not exhibit(More)
The distribution of glial fibrillary acidic protein (GFAP)-like immunoreactivity (IR) was analyzed in the human fetal inner ear using immunohistochemical techniques. In the 11-week-old human fetal cochlea, nerve fibers labelled with GFAP had reached the basilar membrane, but innervation stained by antisera against GFAP to the hair cells reached only as far(More)
We evaluated vestibular function, especially for positional, head shaking and caloric nystagmus, in 43 patients with vestibular neuronitis, for long periods from the onset. The results suggested that in these cases of vestibular neuronitis, which were studied for more than 10 years after onset of the disease, the disease may still be in the uncompensated(More)
We have had 30 patients with Harada's disease at our clinic from 1980 to 1993 and their neurotological findings were retrospectively reviewed. There were 12 males and 18 females, whose ages ranged from 15-years to 67-years. Preceding symptoms such as headache or common cold were observed in 50% of the patients. Pleocytosis of the cerebrospinal fluid was(More)