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A double blind trial, using lateral neck radiographs of 100 patients with proven impacted fish bones and 100 normal cases, was conducted to assess the sensitivity, specificity and positive predictive value of radiography for impacted fish bones. Values of 25.3%, 86.3% and 72.7% respectively were obtained. The results are correlated to the clinical findings(More)
To assess the prevalence of use of Personal Cassette Players (PCP) among youths in a residential community in Hong Kong, we interviewed 487 youths aged 15-24 years who attended various activities in eight Youth Centres in Shatin, Hong Kong. 394 (81%) reported using the Personal Cassette Player regularly. The mean duration of PCP use was 2.8 years with a(More)
OBJECTIVE This study examines subjects' level of consciousness with bispectral analysis in sedation endoscopy of the upper airway. STUDY DESIGN A prospective study. SETTING University hospital. SUBJECTS AND METHODS Bispectral analysis levels recorded in natural sleep of 43 patients with obstructive sleep apnea during an overnight polysomnographic(More)
BACKGROUND AND OBJECTIVE Cantonese is a tone language. A change in the fundamental frequency pattern within the same phonemic segment causes a change in the lexical meaning. The present study examined the Cantonese tone perception ability of cochlear implant children in comparison with normal-hearing children. It was hypothesized that cochlear implant(More)
BACKGROUND Dysplasia or carcinoma in situ lesions (NPCIS) of the nasopharynx have rarely been reported. The prevalence, biologic behavior, and the transformation period of the pure preinvasive lesions have not been fully explained. METHODS All cases of NPCIS were retrospectively reviewed during the period between 1990 and 2000. The clinical features of(More)
OBJECTIVES This study investigated the effects of implant experience and age at implantation on the Cantonese tone production of children with cochlear implants. The study also examined whether there was a particular age at which children were more responsive to acquiring tones. METHODS The study included 45 children who had received unilateral cochlear(More)
BACKGROUND Sinus histiocytosis with massive lymphadenopathy or Rosai-Dorfman disease (RDD) is a rare benign disease with nodal and extranodal involvement. METHODS AND RESULTS Herein, we report 3 cases in which the patients presented with nasal masses. In addition, 2 of the 3 patients had subglottic lesions. Only 2 of the 3 patients had cervical(More)
OBJECTIVE To establish an olfactory test in the Hong Kong Chinese population. STUDY DESIGN Prospective analysis of the results of a combined olfactory test (COT) for patients with olfactory dysfunction and for normal subjects attending a secondary and tertiary ear, nose and throat centre. METHOD Our COT was based on and modified from the Connecticut(More)
OBJECTIVES To establish the reliability and validity of the Chinese (Cantonese) version of the Tinnitus Handicap Inventory to measure the self-perceived handicapping effect and severity of the condition in patients with chronic tinnitus. DESIGN Cross-sectional psychometric validation study. SETTING Audiology clinics in a hospital setting. PARTICIPANTS(More)
Studies have shown that while children acquire all Cantonese tones by age two, they are not able to label them reliably until approximately age 10. One possible explanation for the large age discrepancy may be the different methodologies used. This study aimed to (1) investigate a new research design for the collection of reliable tone perception data from(More)