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Biomedical subjects

F M Cheung

Publications and source records attributed to F M Cheung.

At least 19 recordsLinked to original sources

An environmental health survey of residents in Boston Chinatown.

The Asian/Pacific Islander (API) population in the United States is majority immigrant, diverse ethnically, and resides predominately in urban settings. It is possible that urban APIs face health-threatening environmental hazards that differ in form or magnitude from environmental concerns of other definable subpopulations or the overall population in the United States. To date, little or nothing is known about this topic. Spurred by the complaints of one such community, in Boston Chinatown, which is also of low socioeconomic status, we conducted a first-stage survey of randomly chosen residents about environmental health concerns. Despite a small sample size, we were able to document several environmental factors of potential concern that were worthy of further study. These included exhaust and noise from motor vehicle traffic and dust from construction projects, and factors originating inside the home. Pedestrian safety and lack of open/green space emerged as primary community concerns, while residents' knowledge of environmental hazards, such as lead paint, was found to be weak. We conclude that standard surveys of "environmental justice" in communities such as this one require tailoring of methods to specific conditions in order to be effective. For example, our survey preferentially missed working-age men, and about half of all randomly selected persons were not interviewed despite bilingual/bicultural interviewers, support letters from the local health clinic, and in-person attempts at residences.

Journal Article↗

Diagnostic criteria for pseudomalignant osteoblastoma.

AIMS: Osteoblastoma is a rare bone tumour and differentiation from osteosarcoma is occasionally a diagnostic problem. The difficulty is further compounded when such a lesion microscopically shows cytological or architectural atypia. METHODS AND RESULTS: A case of pseudomalignant osteoblastoma occurring in the left iliac crest of a 34-year-old Chinese woman is presented. Radiographic findings were non-diagnostic, but favoured a benign yet locally aggressive lesion. Histologically the diagnosis was based on the findings of classical osteoblastoma areas harbouring pseudomalignant osteoblasts in the absence of mitoses, but there were co-existing atypical architectural features also. CONCLUSION: The significance and pathogenesis of the 'permeative pattern' are discussed. Difficulties in differentiating borderline lesions are emphasized.

Adult↗

Gastroesophageal reflux, motility disorders, and psychological profiles in the etiology of globus pharyngis.

The aim of this study was to investigate the origin of globus pharyngis with particular reference to esophageal disorders such as gastroesophageal reflux disease (GERD), motility disorders, structural abnormalities, other gastrointestinal tract diseases, and psychological profile. Previous studies on this subject using 24-hour pH monitoring give conflicting results and are hampered by the high background prevalence of asymptomatic GERD in the normal Western population. The local Chinese population is known to have a very low background level of GERD and therefore is an ideal study population. Twenty-six patients with globus pharyngis underwent 24-hour ambulatory pH monitoring, esophageal manometry, and esophagogastroduodenoscopy with lower esophageal biopsy. A control group of 20 patients presenting with non-ulcer dyspepsia was similarly investigated. Personality profiles of the globus pharyngis subjects and an appropriate control group were assessed. Eight of the globus pharyngis group (30.7%) had evidence of GERD, whereas only one of the controls (5%) demonstrated GERD on 24-hour esophageal pH monitoring (P < 0.05). The manometric and personality profile studies did not show significant differences between study and control groups. We concluded that the finding of GERD in patients with globus pharyngis is not a coincidental finding but that there is a true association between GERD and globus pharyngis.

Adult↗

Sexual harassment of Chinese college students.

Sexual harassment of Chinese college students with a focus on their awareness, experiences, responses, and expectations of institutional intervention to the problem was examined. 358 male and 491 female Chinese college students in Hong Kong participated. There were no gender differences in students' awareness of the phenomenon. Students' own experiences were less frequent than what they had heard about sexual harassment. Peer harassment occurred twice as frequently as faculty harassment. Compared to men, twice as many women said they had been sexually harassed. About one in four women students experienced various forms of sexual harassment and 1% were coerced into sexual activities during their college years by either teachers or peers. Students typically avoided and ignored the harassers and felt that the university should take up active roles in combating the problem. Comparisons with U.S. studies suggested that Chinese college students had a lower awareness and experience level in sexual harassment than U.S. students.

Adult↗

People against the mentally ill: community opposition to residential treatment facilities.

A community campaign against the establishment of psychiatric half-way house in Shatin District, Hong Kong was examined in terms of fear toward mental patients and problems in community relations. Failure of the Government to prepare for the community reintegration of mental patients pointed to lessons to be learned in Community Psychology. The apparent conflict between community empowerment and community care for the disabled was discussed. Suggestions for resolving the paradox included early community mental health education, involvement of community leaders in the planning, application of the knowledge and skills of Social Psychology in dealing with public panic, and cooperation with the mass media to reach the public.

Attitude to Health↗

The indigenization of neurasthenia in Hong Kong.

Despite its origin in Western psychiatry, neurasthenia has become a popular concept in Chinese folk medicine, referring to a variety of somatic and psychological symptoms. Review of Chinese medicinal materials and patent medicines shows that neurasthenia is associated more often with somatic symptoms in tonic type medicine and with psychological and psychosomatic symptoms in sedative and tranquilizer type medicine. Popular Chinese books on neurasthenia suggest that causes might be attributed to lifestyle, psychological factors, and health problems. Recommendations on treatment emphasize self-help approaches through changing lifestyle, examining attitudes, tonic care, and relaxation. As a broad term used loosely by professionals and the lay public in Hong Kong, neurasthenia serves the important function of destigmatizing psychiatric disorders. Psychosexual problems may also be conveyed discreetly through somatic presentation. The indigenization of neurasthenia exemplifies how an originally Western concept acquires cultural meaning. Implications of illness conceptualization and the medical paradigm are discussed.

Combined Modality Therapy↗

Surveys of community attitudes toward mental health facilities: reflections or provocations?

This paper points out how political motives behind community research may affect the outcome. The case of public opposition to psychiatric halfway houses in Hong Kong is used as an illustration. These mass surveys related to the issue are reviewed to show how the different public opinions expressed may be affected by the objectives, context, sample, and content of the surveys.

Attitude↗

Conceptualization of psychiatric illness and help-seeking behavior among Chinese.

Problem conceptualizations of Chinese psychiatric patients were studied in relation to the patterns of help-seeking and ways of coping. Patients who conceptualized their initial problems in purely psychological terms were more likely to use self-directed psychological coping methods, delay initial professional consultation, and approach mental health professionals. Patients who used only somatic concepts were least likely to approach mental health professionals initially or any time during their previous consultation history, and tended to approach medical resources to cope with their problems. Patients who conceptualized their problems in mixed terms approached professional help early on and reached psychiatric resources soonest. These results provide a clearer perspective to understand the somatization tendency among Chinese patients.

Adaptation, Psychological↗

Intracerebral chloromas. Report of a case and review of the literature.

We report a patient with large intracerebral chloromas while in systemic remission from acute myelogenous leukemia. A favourable outcome resulted from surgical debulking and radiotherapy. Review of other reported cases in the literature showed a uniform female occurrence. We believe that intracerebral chloromas represent reactivation of sanctuary deposits in the central nervous system. The treatment of intracerebral chloroma is discussed.

Adult↗

Paths to psychiatric care in Hong Kong.

The pattern of psychiatric consultation in Hong Kong is examined among 226 patients at a public outpatient clinic and 56 patients at a private psychiatric clinic. The approach to psychiatric services is marked by lengthy delay during which patients get help from their family members or close friends. Arrival at the present psychiatric clinic was diverted through other medical resources, primarily Western-style medical services, and to some extent, traditional Chinese medicine. Individual routes were diverse, characterized by frequent switches among resources especially in the private sector. The nature of the patients' presenting complaints as well as the conceptualization of their initial complaints were multi-faceted, including both psychological and somatic factors. The overall consultation pattern of patients in Hong Kong is compared with other studies on Chinese and Western patients. Questions are raised for further analysis.

Adult↗

Preferences in help-seeking among Chinese students.

Chinese university students were asked to indicate their inclination to seek help and the resources for consultation on the 22 problems listed on the Langner Scale. Results showed that the Chinese students were generally not inclined to seek help and when they did, would most often seek help from medical doctors. However, when items were grouped in terms of clinical content, it was found that friends were predominantly preferred for psychological problems while the doctor was preferred for psychophysiological, physiological, and ambiguous problems. More female than male students tended to rely on friends and family members while the reverse pattern was found in the preference for doctors. The mental health professional was rarely cited as a resource for any of the problems. The results provide some explanation for observations made in previous studies on symptom presentation and help-seeking behavior among Chinese psychiatric patients.

Adaptation, Psychological↗

Coronary atherosclerosis among Hong Kong Chinese--a histological and morphometric study using electronic digitizer.

In order to document the prevalence of atherosclerosis of the major coronary arteries among Hong Kong Chinese, a study on material from autopsies done during the year 1981 in Queen Mary Hospital was carried out. The narrowest part of the proximal coronary arteries was studied by light microscopy and morphometrically by electronic digitizer. We found an onset of atherosclerosis in young adult males and a linear progression with age. Females had a delayed onset with a sharp rise after menopause. We were surprised to find an incidence of atherosclerosis among Hong Kong Chinese comparable with that in western populations, as distinct from Chinese in Mainland China. However, mortality due to ischemic heart disease remained relatively low. Racial factors may contribute to this partial dissociation between coronary atherosclerosis and ischemic heart disease.

Adolescent↗

Variations in problem conceptualizations and intended solutions among Hong Kong students.

Cognitive schema were used to explain health and illness behaviors among Chinese students. University students in Hong Kong were asked to attribute causes and suggest solutions to five health/mental health problems: Weakness/Fatigue, Tension/Anxiety, Sleep Difficulty, Hollow/Emptiness, and Headache. The patterns of endorsement on the causal and solution categories used for the five problems were compared using a new asymptotic chi-squared test. The response patterns were found to be significantly different across the five problems. Each problem was attributed to multiple causes including psychological, social, situational, somatic, and existential factors. The intended solutions were often related to the nature of the causal attributions especially when the problems were mild. In lay help-seeking, the Hong Kong students would attempt a variety of self-help measures. However, for professional consultation, the medical doctor would be the primary care professional the students would turn to for most of the problems except in the case of Hollow/Emptiness.

Adult↗

Psychological symptoms among Chinese in urban Hong Kong.

Clinical observations on Chinese mental patients suggested that somatization was a common mode of symptom presentation. One explanation attributed to the phenomenon was that Chinese tend to suppress or deny their feelings. The present study took the data on the 22-item Langner Scale collected as part of the Hong Kong Biosocial Survey and reanalyzed the responses of 3925 Chinese subjects in terms of Crandell and Dohrenwend's subscales. Results showed that among these urban Chinese, report of psychological symptoms on the Langner Scale was higher than that of psychophysiological, physiological and ambiguous symptoms. Significant differences in subscale scores were found among five subject variables: age, sex, education, socioeconomic status and total number of reported symptoms. Within each subgroup of the subject variables, scores on the psychological subscale was significantly higher than scores on the other three subscales. These findings disputed the contention that Chinese in general tend to deny their emotions. Somatization among Chinese mental patients in medical settings and report of psychological symptoms by Chinese may not be mutually exclusive phenomena. A more meaningful examination of the somatization concept should include investigation of the conceptualization of mental illness among Chinese, the channels chosen for help and symptom presentation in different settings.

Adult↗

Histologic variant of the epithelial-myoepithelial carcinoma of the salivary gland: a case report.

BACKGROUND: Epithelial-myoepithelial carcinoma (EMC) of the salivary gland is a low-grade carcinoma. It has been widely accepted as a clinicopathologic entity only in the past decade. Histologically, the classical bimodal differentiation of inner eosinophilic ductal cells and outer layer of clear myoepithelial cells has been well documented by many authors. However, the proportion of each component may vary in different tumors or within the same tumor, and different histologic patterns have been described. The clinicopathologic findings of an epithelial-myoepithelial carcinoma of the parotid gland in a 73-year-old man are presented. METHODS: Light microscopy including immunohistochemistry and ultrastructural studies were done. RESULTS: The various histologic patterns and bimodal differentiation of the tumor were noted. CONCLUSIONS: The present case demonstrates the myriad of histologic patterns that can occur in epithelial-myoepithelial carcinoma. Differentiation from malignant mixed tumor is essential and possible. The importance of the awareness of its histologic variants is emphasized.

Adenocarcinoma↗