JIBI INKOKA TEMBO
Online ISSN : 1883-6429
Print ISSN : 0386-9687
ISSN-L : 0386-9687
Volume 39, Issue 2
Displaying 1-15 of 15 articles from this issue
  • Akiyoshi Konno, Nobuhisa Terada, Toyoyuki Hanazawa, Tsutomu Numata, Ta ...
    1996 Volume 39 Issue 2 Pages 127-136
    Published: April 15, 1996
    Released on J-STAGE: August 10, 2011
    JOURNAL FREE ACCESS
    Neural reflex via local and/or central reflexive pathway is only partially involved in development of vasculardilatation and vascular leakage in the nasal mucosa in subjects with nasal allergy.
    In the pale and edematous nasal mucosa interstitialedema is dominant and blood flow measured by lasor-Doppler flowmetry is markedly decreased. Thecapacitance vessel in the edematous nasal mucosa responds poorly to sympathetic stimulation. The marked swelling of the nasal mucosa observed in subjects withnasal allergy is largely caused by the direct effects of a large variety of chemical mediators, such as peptide leukotriens, histamine and PAF, the most important of which is peptide leukotriens, on the nasal vasculature.
    These chemical mediators interacts among themselves to accentuate their effects on the target organs of the nasalmucosa.
    The increasing availability of specific receptor antagonists is allowing us to evaluate the role of these chemical mediators in nasal allergy.
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  • AUDITORYB RAINSTEMR ESPONSEA ND BINAURALIN TERACTIONFR OM THE POTENTIALSO F THE INFERIORC OLLICULUS
    Hiroyuki Fujita
    1996 Volume 39 Issue 2 Pages 137-144
    Published: April 15, 1996
    Released on J-STAGE: August 10, 2011
    JOURNAL FREE ACCESS
    Binaural interaction (BI), a characteristic of the auditory system, was experimentally demonstrated using guinea pigs. Auditory brainstem response (ABR) and BI were recorded under general anesthesia. After removingthe cranial bones and inserting an electrode directly into the inferior colliculus, BI and potentials were measured. Because ABRs beyond P 3 showed differences in amplitude and phase between binaurally stimulating and summation waves, the results confirmed that the central nervous system above the superior olivary complex is related to BI. Potentials showed larger amplitudes and shorter latencies on the side opposite to the electrode insertion. This suggests that the potentials of the inferior colliculus havecontralateral dominance. Both wave latencies of ABR and BI from the potentials of the inferior colliculus correlated negatively with stimulating sound pressures
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  • Jin Okubo, Hideji Okuno, Mari Yamada, Hitosi Hentona
    1996 Volume 39 Issue 2 Pages 145-149
    Published: April 15, 1996
    Released on J-STAGE: August 10, 2011
    JOURNAL FREE ACCESS
    The subjects of this study were 22 patients (24 ears) with otitis media with effusion who had type C or type B tympanograms. Their mean age was 48.7 years; they were relatively old patients with otitis media with effusion.
    The method employed to measure the pH of the middlev ear exudate consisted of incising the tympanum under iontophoretic anesthesia, inserting an antimony pH meter into the exudate fluid in the tympanic cavity through the incision, and recording the exudative fluid pH value afterthe readings stabilized.
    The measurements obtained showed that the pH of exud te in otitis media with effusion never exceeded 7.4, averaging 7.05±0.27, and there seemed to be 12 ears with type B tympanograms among those with a pH of 7.0 or less.
    A simple middle ear cavity gas model was created by mixing carbon dioxide gas in a fixed volume of air at an overall ratio of 6%, and a phenomenon was observed whereby solubility of carbon dioxide gas varies with the ratio between the volume of gas and the volume of fluid in the vessel.
    This suggests that one of the reasons for the negative pressure in the middl ear in otitis media with effusion may be that exudate solubility varies depending on the ratio between middle ear cavity gas volume and exudative fluid volume, and this may promote the development of negative pressure, paralleling inhibition of middle ear mucosa gas metabolism.
    Thus, it was concluded that, depending on the stage of the disease, the ratio between the volume of middle ear cavity exudative fluid and gas volume plays a major role in creating negative pressure in the middle ear cavity, giving rise to variety of negative pressure patterns.
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  • Kazuhiro Aoki, Yukie Mitani, Tomihiko Tuji, Yukio Hamada, Hiroshi Mori ...
    1996 Volume 39 Issue 2 Pages 150-157
    Published: April 15, 1996
    Released on J-STAGE: August 10, 2011
    JOURNAL FREE ACCESS
    On-line measurements of the pressure and volume of the middle ear cavity were performed in thirty six cases of OME in children with insertion of ventilation tube, at 14 days, 1 month, 3 months, 6 months, 12 months and more than 18 months after the insertion of a tympanostomy tube. The data of the pressure andvolume were investigated together with the degree of mastoid pneumatization on X-ray film and the histopathological changes of middle ear mucosa samples which were taken during insertion of middle ear ventilation tube. We classified changes in the epithelium and subepithelial layer of the middle ear mucosa samples into 4 categories according to our inflammatory criterion.
    Our observation showed that the coefficient of correlation in comparing the data of the volume of middle ear cavity to the data of the degree of pneumatization on X-ray film was highest at three and four months after insertion of tympanostomy tube. This correlation indicated that the hypertrophied mucosa by the inflammation of OME turned to the normal thickness of mucosa until this time. The pressure of middle ear cavity was lowest at this same time and after that it elevated gradually. The recovery rate of elevation of the middle ear pressure was closely related to the histopathological changes of middle ear mucosa. Regarding the recovery rate of the middle ear pressure, significant difference could be distinguished in comparing the data of the low inflamed group to the data of the high inflamed group. In high inflamed group, it took more than one year when the pressure turned to the normal level.
    This study showed that, after the insertion of tympanostomy tube in OME cases, the measurementsof pressure and volume of middle ear cavity was useful to evaluate the recovery phase of OME and to understand when to remove the tympanostomy tube.
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  • Takahiro Inouye, Toshiki Tomita, Seiichi Shinden, Hitoshi Takagi, Shig ...
    1996 Volume 39 Issue 2 Pages 158-162
    Published: April 15, 1996
    Released on J-STAGE: August 10, 2011
    JOURNAL FREE ACCESS
    Preoperative radiological diagnosis constitutes the most important factor for the surgical treatment of hyperparathyroidism. In this regard, MRI is useful for detecting the abnormal parathyroid, but it is often difficult to localize it using MRI only. It is thus necessary to combine this procedure with excellent subtraction scintigraph.
    We peformed both 201T1-99mTc and 99mTc·EMIBI-99mTc subtraction scintigraphy in seven patients with primary hyperparathyroidism and compared them the radiological results. Five patients presented parathyroid adenomas and the rest hypertrophy of the parathyroid. We could detect the abnormal parathyroid in four patients (57.1%) by 201T1-99mTc subtraction scintigraphy and in six patients (85.7%) by 99mTc·MIBI-99mTc subtraction scintigraphy. We therefore believe that 99mTc·EMIBI-99mTc subtraction scintigraphy will become an essential examination for primary hyperparathyroidism rather than the presently employed201T1-99mTc subtraction scintigraph.
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  • Isao Fujimori, Izuru Nozawa, Ken-ichi Hisamatsu, Yuji Kozuka, Hisayo N ...
    1996 Volume 39 Issue 2 Pages 163-167
    Published: April 15, 1996
    Released on J-STAGE: August 10, 2011
    JOURNAL FREE ACCESS
    Paranasal aspergillosis is a potentially progressive continuum of disease, classically described as having four stages: allergic, non-invasive, invasive, and fulminant. We report a very rare case of aspergilloma of the maxillary sinus progression with intracranial and orbital extension in a 76-year-old man.
    He had a history of left maxillotomy and showed histological evidence of tissue invasion by aspergillus one year earlier. He had complaints of left exophthalmus and double vision for 2 months prior to consultation. Roentgenographic examinations revealed tumor-like shadow in the middle part of the left orbit continuing to the maxillary sinus, Fossa temporalis and nasopharynx. He was treated with a combination of surgery via an extranasal approach and anti-fungal chemotherapy. However, one month postoperatively, aspergillosis became invasive with cerebral extension.
    We emphasize that not only sphenoid aspergillosis but also maxillary aspergillosis, such as this case, can be a more aggressive disease and may be fatal.
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  • Nobuya Fujita, Toshiaki Yamanaka, Kaori Ando, Hiroshi Miyahara, Takash ...
    1996 Volume 39 Issue 2 Pages 168-171
    Published: April 15, 1996
    Released on J-STAGE: August 10, 2011
    JOURNAL FREE ACCESS
    We report a case of post-traumatic incomplete ossicular disruption. The case was assumed initially as a traumatic ear drum perforation. However, a hearing impairment continued at 45 dB for 6 months and no pathological findings were detected in the tympanic cavity by means of highresolution CT scan. We planned and carried out an exploratory operation in the tympanum.
    On the operation, a discontinuity was found in the incudostapedialjoint. The discontinuity was reconstructedby transposing the incus body trimmed, and after theoperation the gain in hearing level was 45 dB.
    We may encounter cases with conductive deafness afterhead trauma where pathological lesions are difficult todetect by means of audiometry and imaging test. In such cases ossicular disruption may be detected by exploratory operation. Therefore, we recommend exploratory tympanotomy in such cases under informed consent.
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  • Toshimi Mizutani, Shin-ichi Okura, Yukiko Iino
    1996 Volume 39 Issue 2 Pages 172-176
    Published: April 15, 1996
    Released on J-STAGE: August 10, 2011
    JOURNAL FREE ACCESS
    We report a case of osteoma of the temporal bonecausing a stenosis of the external auditory canal, whichresulting in an external ear cholesteatoma extending to theepitympanum. The patient, 51-year-old female, visited ourhospital with a complaint of left hearing impairment andotorrhea. Otoscopic findings of the left ear revealed a bone-like hard mass occupying the external auditory canal. Temporal bone CT and MRI demonstrated an osteogenictumor arising from the cortical area of the left temporalbone extending to the external ear canal. Removal of theosteogenic tumor and meatotympanoplasty were performed.
    Histopathological study revealed an osteoma consistingof compact bone and spongy bone, namely a mixed typedosteoma. The postoperative course was uneventful and thehearing was improved.
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  • Yoshinori Tomiya, Yoshio Honda, Takeshi Yabe, Yasutaka Kikuchi, Masaji ...
    1996 Volume 39 Issue 2 Pages 177-181
    Published: April 15, 1996
    Released on J-STAGE: August 10, 2011
    JOURNAL FREE ACCESS
    Teratomas are tumors consisting of tissue arising fromall three embryonic germ layers. The most common locations for teratomas include the sacrococcygeal region and the gonads. Teratomas of the head and neck are uncommon, and the case of teratoma arising from the middle ear or eustachian tube is very rare. A very rare case. of middle ear teratoma presenting in an 6-year-old male is reported. Main complaints were continuous otorrhea and hearing loss of the right ear. We found the tumor existed from the middle ear to external ear canal through the perforation of the tympanic membrane and suspected the tumor to be inflammatory granulation or benign tumor. At the operation, we found the tumor invaded into the eustachian tube and came into contact with the internal carotid artery. So it was possible that complete resection was not performed. Pathological diagnosis was mature teratoma. We thought that it was necessary to follow up for long period because of possibility of recurrence.
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  • [in Japanese]
    1996 Volume 39 Issue 2 Pages 182-187
    Published: April 15, 1996
    Released on J-STAGE: August 10, 2011
    JOURNAL FREE ACCESS
    Download PDF (928K)
  • [in Japanese]
    1996 Volume 39 Issue 2 Pages 188-192
    Published: April 15, 1996
    Released on J-STAGE: August 10, 2011
    JOURNAL FREE ACCESS
    Download PDF (879K)
  • [in Japanese]
    1996 Volume 39 Issue 2 Pages 193-201
    Published: April 15, 1996
    Released on J-STAGE: August 10, 2011
    JOURNAL FREE ACCESS
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  • [in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
    1996 Volume 39 Issue 2 Pages 207-212
    Published: April 15, 1996
    Released on J-STAGE: August 10, 2011
    JOURNAL FREE ACCESS
  • [in Japanese], [in Japanese], [in Japanese], [in Japanese]
    1996 Volume 39 Issue 2 Pages 213-221
    Published: April 15, 1996
    Released on J-STAGE: August 10, 2011
    JOURNAL FREE ACCESS
  • [in Japanese], [in Japanese], [in Japanese], [in Japanese]
    1996 Volume 39 Issue 2 Pages 222-231
    Published: April 15, 1996
    Released on J-STAGE: August 10, 2011
    JOURNAL FREE ACCESS
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