日本耳鼻咽喉科学会会報
Online ISSN : 1883-0854
Print ISSN : 0030-6622
ISSN-L : 0030-6622
86 巻, 5 号
選択された号の論文の6件中1~6を表示しています
  • 船坂 宗太郎, 熊川 孝三, 船井 洋光
    1983 年 86 巻 5 号 p. 511-517
    発行日: 1983/05/20
    公開日: 2008/03/19
    ジャーナル フリー
    The routine tympanogram appears not to be sensitive for the diagnosis of ossicular chain disorders. This may be due to the facts that the probe tone frequency is fixed to around 220Hz and impedance of the middle ear is figurized as an equivalent air volume. A new device has been developped in order to improve the diagnostic value.
    This device produces a sweep frequency probe tone of 220Hz to 2000Hz and can measure both the sound pressure and the phase in the external canal as the probe tone frequency sweeps. The microcomputor in the device calculates the difference in sound pressure or in phase between conditions of -200mmH2O an 0mmH2O of air pressure in the canal, and figurizes these values as a polar notation diagram.
    Ten patients with ossicular anomalies were tested by this device. Preoperative diagnosis agreed with the operative finding. Results indicate that this test can be of great value in the evaluation of ossicular anomalies.
  • 飯沼 寿孝, 田中 幹夫, 大澤 博之, 春山 喜一, 広田 佳治
    1983 年 86 巻 5 号 p. 518-530
    発行日: 1983/05/20
    公開日: 2008/03/19
    ジャーナル フリー
    The ultimate postoperative conditions of the maxillary sinus were investigated using polytomographic frontal sections. Linear measurements were performed at 9 points corresponding to the dimensions of the orbit, ethmoid, nasal cavity, maxillary sinus and external face. All the measurements were performed on films obtained from three groups, namely, a preoperative (control) group of 36 cases of chronic sinusitis, postoperative group of the same 36 cases in follow-up, and a group of 84 cases of the postoperative cyst of the maxilla. Average durations after the initial sinus surgery were 17.6 months for the postop. and 18.5 years for the cyst group. The preop. group served as a control and statistically significant differences were obtained in the orbital height, maxillary breadth, and height of the naso-antral communication at the middle meatus and breadth of the inferior nasal meatus. The postoperative retractions of such sinus walls as superior, medial and lateral were thus confirmed.
    Under the uneventful course, the postop. maxillary sinus is internally obliterated by scar tissue and is externally constricted by retractions of the sinus walls.
    The postoperative sinus thus resembles an underdeveloped maxillary sinus. A bibliographical review of reports concerning the functions of the maxillary sinus was done and a tentative conclusion was arrived as the maxillary sinus is a region left vacant between the functionally essential structures of the maxilla. The region might as well be filled with medullary tissue or postop. scar tissue, without significant influence.
    The Caldwell-Luc surgery does not lead to any functional alterations, at least in adults. The surgery does produce a change, however, which might be closely related to the etiological mechanism of postoperative cysts of the maxilla.
  • 稲垣 千果夫
    1983 年 86 巻 5 号 p. 531-538
    発行日: 1983/05/20
    公開日: 2008/03/19
    ジャーナル フリー
    Morphological developmental change of the attachment of the tectorial membrane to the surface of the organ of Corti in the neonatal hamster was studied.
    Golden hamsters were decapitated under ether anesthesia everyday from the day of birth until 20 days after birth. The inner ears were extirpated within 10 minutes in chilled 1% paraformaldehyde-3% glutaraldehyde solution. All specimens were refixed in 2% osmic acid, dehydrated and observed by scanning electron microscope with the styrene resin cracking method.
    As a result, the following conclusions were obtained. 1) In the immature organ of Corti on the day of birth, marginal complex of the tectorial membrane is noted as an amorphous substance on the supporting cells surrounding sensory cells. 2) From 3 days after birth, marginal complex forms a network and the attachments of the membranous part to the surface of pillar cells, radial strands to the surface of each rows of Deiters' cells and oblique strands to the basal direction to the surface of Hensen's cells begin to be observed. These attachments gradually disappear from about a week after birth when marginal pillars appear on the surface of the third row of Deiters' cells. 3) Marginal pillars begin to disappear on 16 days after birth and are not observed on 20 days after birth at all. 4) The imprints of the sensory hairs of the outer hair cells on the undersurface of the tectorial membrane are clearly observed from about two weeks after birth. 5) It seems that the sensory hairs of the inner hair cells do not make an attachment to the tectorial membrane in the normal condition. 6) It seems that though the attachment of the tectorial membrane (Hensen's stripe) to the surface of supporting cells surrounding inner hair cells exists in the developing stage, it is much weaker than the attachment in other parts. 7) Considering the findings from other mammals reported by other investigators, it seems that the disappearance of marginal pillars indicates maturity of the organ of Corti.
  • 金川 清人
    1983 年 86 巻 5 号 p. 539-550
    発行日: 1983/05/20
    公開日: 2008/03/19
    ジャーナル フリー
    Since the beginning of the 20th century, it has been known that the radiation can cause hearing loss, but the details of this process are not as well known as those of radiation effects on other organs.
    The anther studied the effects of single dose of x-ray irradiation on the inner ear of guinea pigs by continuously measurement of cochlear microphonics (CM) and auditory brainstem responses (ABR) with permanent electrodes implanted on the round window and in the skull. With 2, 000, 4, 000, and 6, 000 rad, slight conductive hearing impairment was observed in some guinea pigs. Severe sensorineural hearing loss was acutely induced by irradiation more than 8, 000 rad. After 10, 000 rad irradiation, both CM and ABR to air and bone conduction stimuli were usually enhanced by 20-50% above the pre-irradiation levels for one or two hours after completion of the irradiation, and they disappeared simultaneously about 6 hours after irradiation.
    Hearing impairment began earlier with increase in irradiation: about 10 hours at 8, 000 rad, about 6 hours at 10, 000 rad, and about 3 hours at 12, 000 rad.
    Responses to high frequency sounds generally disappeared slightly earlier than those to low frequencies.
    The I-III interpeak latency of ABR didn't change after 10, 000 rad irradiation.
    Endocochlear potential (EP) drop to about 30mV was observed about 7 hours after 10, 000 rad irradiation.
    In the scanning electron micrographs, the sensory hairs in the outer and inner hair cells of every turn seemed to be normal 6 hours after 10, 000 rad irradiation.
    In transmission electron microscopy, however, heavy damages were seen at the outer hair cells in the basal coil of the cochlea.
  • 春山 喜一, 尾崎 將, 飯沼 寿孝, 深間 内厚子, 大谷 美弥子
    1983 年 86 巻 5 号 p. 551-558
    発行日: 1983/05/20
    公開日: 2008/03/19
    ジャーナル フリー
    A case of fatal Throtrastoma seen by a 67-year-old male was reported. The patient received a right carotid angiography in 1943 for the investigation of a gunshot wound during the war. Extravasation of Throtrast was notified by the physician and a small induration remained. In 1976, the induration increased in size occupying the whole of the right lateral cervical area. This was accompanied with bouts of clonic seizure, loss of consciousness and lower cranial nerve palsies. In June, 1980, A sudden increase of the mass, high fever with general malaise, and permanent lower cranial nerve palsies led the patient seek administration to the University Hospital. His general condition kept detereorating with two attacks of severe hemoptysis and the patient deceased. Necropsy revealed a large Throtrast granuloma, containing amorphous mass of residual Throtrast, extending from the cranial base down to the mediastinum. Two perforations, which led to the fatal hemoptysis, were identified at the hypopharynx and tracheocarina. Both the right brachiocephalic artery and innominate vein were occluded and the right carotid artery was constricted to a narrow cleft. A bibliographical review of Throtrast granuloma was also included.
  • 摘出標本の減衰値測定
    笠井 創
    1983 年 86 巻 5 号 p. 559-572
    発行日: 1983/05/20
    公開日: 2008/03/19
    ジャーナル フリー
    The purpose of this study is to investigate the ultrasonic attenuation coefficient in parotid tumor to deduce its histo-pathological features. By means of the pulsetransmission technique at 2MHz frequency, attenuation coefficient in 28 freshly excised parotid tumors was measured and compared wito their histological features.
    The results were summarized as follows: 1) Attenuation coefficient (dB/cm) was widely spread from 0.8 to 4.1, reflecting various histopathological features of parotid tumors. 2) Pleomorphic adenomas with high attenuation were found to consist of chondroid components sometimes with rich collagen fibers. 3) Similar results were obtained in malignant parotid tumors. 4) The measurement of over-all attenuation coefficient might warrant the speculation of the dominant component of tumors of the parotid gland.
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