Auris, nasus, larynx
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Auris, nasus, larynx · Feb 2003
Case ReportsA rare case of olfactory neuroblastoma with intracranial extension.
Olfactory neuroblastoma (ONB) is a rare form of head and neck tumor, and further ONB presenting an intracranial extension is extremely rare. Therefore, at the present time there is no established therapeutic standard supported by oncological studies. Our report documents a patient who underwent a craniotomy in combination with transnasal approach for tumor excision, followed by postoperative irradiation. We conclude that the patient shows no evidence of recurrence during the 11-year follow-up involving sinus CT scans and endoscopic examinations.
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Auris, nasus, larynx · Feb 2003
Case Reports Comparative StudyPenetrating neck injuries involving wooden foreign bodies: the role of MRI and the misinterpretation of CT images.
A 12-year-old, boy fell in the bush and suffered a penetrating neck wound. Computed tomography(CT-scan) was performed, but no foreign body was detected inside the wound. The patient returned home after ordinary wound care. ⋯ Under general anesthesia the wooden (bamboo) foreign body was removed. This case highlights the needs to be aware of the potential for misinterpretation of CT images, especially in acute wooden penetration injury. Its also demonstrates that MRI is a useful adjust to CT in the detection of non-metallic foreign bodies.
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Auris, nasus, larynx · Feb 2003
Flexibility of vestibulo-ocular reflex adaptation to modified visual input in human.
The vestibulo-ocular reflex (VOR) serves to keep images relatively stable on the retina. To maintain appropriate performance and minimize image slip throughout life, VOR is subjected to long-term adaptive regulation by visual input. It has been reported that adaptive changes in VOR gain (eye velocity/head velocity) are evoked either by fitting subjects with magnifying, miniaturizing, or reversing spectacles during normal behavior, or by moving a large visual field in or out of phase relative to the subject's head movement. ⋯ In the x1 adaptation experiment (30 degrees at 0.3 Hz), the percentage gain change was -62% under the same conditions, -50% at 0.1 Hz and 60 degrees amplitude, and -30% at 0.2 Hz and 60 degrees amplitude. No change of VOR gain was observed at other frequencies, and the subject was not adapted at 0.1 Hz and 30 degrees amplitude. The larger VOR gain increase in the x2 adaptation experiment for the faster head angular acceleration leads to the conclusion that the VOR gain mechanism can set vuite similar in terms of the head acceleration.
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This study assessed the efficacy and safety of end-to-end anastomosis of the trachea following segmental resection in chronic tracheal stenosis. ⋯ This operation provides a one-step cure for the stenosed trachea and can be applied to the resection of less than six tracheal segments.
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Auris, nasus, larynx · Oct 2002
Review Case ReportsBezold's abscess arising with recurrent cholesteatoma 20 years after the first surgery: with a review of the 18 cases published in Japan since 1960.
The classic Bezold's abscess was described as a deep neck abscess arising from an acute mastoiditis. With the pervasive use of antibiotics, the incidence of otitic suppurative complications including Bezold's abscess has dramatically decreased today. This decreased incidence has led to decreased familiarity and a subsequent increased delay in diagnosis. ⋯ In this patient despite the prior canal wall down tympanoplasty, granulation tissue blocked the pathway from the mastoid to the external auditory meatus. A cholesteatoma formed in this obstructed space became secondarily infected and filled the mastoid cavity with pus. This recent clinical presentation of Bezold's abscess is described and the Japanese literature reviewed to renew familiarity with this rare complication.