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Volume 49, Issue 4
Displaying 1-9 of 9 articles from this issue
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[in Japanese]2006 Volume 49 Issue 4 Pages 160-161
Published: August 15, 2006
Released on J-STAGE: March 18, 2011
JOURNAL FREE ACCESSDownload PDF (3365K) -
Makoto Oda2006 Volume 49 Issue 4 Pages 162-171
Published: August 15, 2006
Released on J-STAGE: March 18, 2011
JOURNAL FREE ACCESSAfter a brief review of literature, causes and epidemiological aspects on tinnitus were described. In most cases of tinnitus there was accompanying hearing loss indicating damage to the auditory system frequently at the level of the cochlea and in particular damage to the hair cells. Hair cell damage would effected the cochlear function leading to hearing loss and often also to tinnitus.
It was revealed that aging was an important factor of increasing patients suffering from tinnitus. Large-scale population studies of tinnitus in UK and our tinnitus epidemiological data together showed that a greater prevalence of tinnitus among females than males in the lower age groups contrasts with a predominance among menat the higher age groups
Most tinnitus patients had a various kind of hearing impairment. However about 10% of patients had only tinnitus without deafness. Their hearing showed normal in all test frequencies. However, Bekesy tracing revealed the micro dip between test frequencies used in pure tone audiometry and there was hearing loss in over 8, 000Hz in high frequency audiometry. Therefore, the cause of this type of tinnitus might be supposed the tiny damage which occurred in the limited area of organ of Corti.
On management of tinnitus, drug therapy had been ordinarily employed for a while.
In recent years, because a neurophysiological approach had been introduced as a tinnitus management, an outline of the treatment was described briefly.View full abstractDownload PDF (1545K) -
Yohko Haniu2006 Volume 49 Issue 4 Pages 172-178
Published: August 15, 2006
Released on J-STAGE: March 18, 2011
JOURNAL FREE ACCESSAcute low-tone hearing loss is characterized by the acute onset of hearing loss limited to low frequencies below 1, 000Hz and has a good prognosis of recovery to near normal hearing levels. The condition has also been reported as sudden deafness limited to low frequencies and as being related in some respects to Menier disease. Electrocochleography was performed using an extratympanic electrode, HN-5, in 51 ALHL (Acute Low-tone Sensorineural Hearing Loss) cases (24 men, 27 women), with an average age of 44.2 ± 13.2 years (range, 21-76 years). The AP, SP and CM amplitudes ; the AP latency, and the -SP/AP (all at 90 dBnHL) and the CM threshold were then compared with those of 14 normal subjects to examine differences that might allow the inner ear pathology of ALHL cases to be deduced. No statistically significant differences in the AP, SP or CM amplitudes were observed between the normal and ALHL subjects. However, the ALHL subjects showed a delayed AP latency and a higher -SP/AP, compared with the normal subjects. These differences were statistically significant. Overall, 54% of the ALHL cases showed a delayed AP latency and 52% of the ALHL subjects showed a higher than normal -SP/AP. The CM threshold of the normal subjects was between 20 and 0 dBnHL, whereas only 25 of the 51 subjects with ALHL had a threshold below 20 dBnHL.
These findings suggested that different ALHL cases may have different types of inner ear pathologies. For example, a high -SP/AP ratio suggests inner ear hydrops, a delayed AP latency suggests irreversible organic changes in the spiral ganglion, and a raised CM threshold suggests damage to the basilar membrane.View full abstractDownload PDF (1077K) -
Yoshinori Tomiya, Makoto Iida, Daiya Asaka, Aya Ochiai, [in Japanese], ...2006 Volume 49 Issue 4 Pages 179-185
Published: August 15, 2006
Released on J-STAGE: March 18, 2011
JOURNAL FREE ACCESSWe report a case of allergic fungal sinusitis with multifocal bone erosion and sinus extension into the pterygopalatine fossa. A 32-year-old female who presented with nasal obstruction on the right side was treated by endoscopic sinus surgery, but the obstruction soon recurred. A CT scan revealed bilateral soft tissue attenuation of all sinuses except the left maxillary sinus. The walls of the sphenoid sinus had eroded bilaterally, and sinuses extended into the pterygopalatine fossa. Endoscopic sinus surgery was performed again, and the debris that filled all of the sinuses was removed. The debris revealed mucinous material with numerous eosinophils and fungal elements consistent with allergic fungal sinusitis. After surgery, the patient was treated with systemic steroids and sinus irrigation for 2 years, and she currently has no complaints. The CT scans after treatment showed that the bone erosion and sinus extension into the pterygopalatine fossa was resolved.View full abstractDownload PDF (4370K) -
Tsuguhisa Nakayama, Susumu Okano, Youko Okino, Takuto Yoshida, Tomokat ...2006 Volume 49 Issue 4 Pages 186-191
Published: August 15, 2006
Released on J-STAGE: March 18, 2011
JOURNAL FREE ACCESSWe report two cases of Wegener's granulomatosis negative for C-ANCA. Case 1 : A 56-year-old man reported throat pain and neck lymphadenopathy. Faucial tonsil, the nasal cavity, and lungs showed a mass-related lesion. Repeated biopsy and pathological findings were negative, however, as was the ANCA test. We diagnosed it as Wegener's granulomatosis suspect. Case 2 : A 67-year-old man reported ophthalmalgia and decreased visual acuity. At first we suspected nasal optic neuropathy, but symptoms did not bear this out. To achieve a definitive diagnosis, we conducted ESS. The histopathological appearance of tissue showed typical findings of Wegener's glanulomatosis. The ANCA test was negative. In negative ANCA findings, histopathology examination is very important in correctly diagnosing Wegener's granulomatosis.View full abstractDownload PDF (2691K) -
[in Japanese]2006 Volume 49 Issue 4 Pages 192-195
Published: August 15, 2006
Released on J-STAGE: March 18, 2011
JOURNAL FREE ACCESSDownload PDF (2639K) -
[in Japanese]2006 Volume 49 Issue 4 Pages 196-199
Published: August 15, 2006
Released on J-STAGE: August 16, 2011
JOURNAL FREE ACCESSDownload PDF (559K) -
2006 Volume 49 Issue 4 Pages 200-207
Published: August 15, 2006
Released on J-STAGE: March 18, 2011
JOURNAL FREE ACCESSDownload PDF (5260K) -
[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...2006 Volume 49 Issue 4 Pages 208-213
Published: August 15, 2006
Released on J-STAGE: March 18, 2011
JOURNAL FREE ACCESS
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