No abstract available.
Bone Plates ; Mandible ; Odontoma ; Transplants

OBJECTIVES: This study was performed to investigate the effectiveness of the questionnaire. METHODS: Workers'health examination records, work environment record, and questionnaires of selected industries as samples were analysed using logistic regression analysis and discrimination analysis Results'Cases of bearing impairment (Dl+C) as dependent variables, and age, work duration and level of environmental noise as independent variables were selected for multiple unconditional logistic regression analysis. Odds ratio was 4.04 in hearing difficulty, 2.78 in tlnnitus and 1.08 in age. In the second analysis Noise induced hearing loss is selected as dependent variable. The OR in hearing difficulty was 3.67(95 % C.1. : 1.61 8.61), and was 1.09(95 % C.1. : 1.05-1.14) in age. Conditionnal multlple logistic regression analysis was performed. In hearing impairment as dependent variable, the OR of age was 1.02(95 % C.1. : 1.00-1.04) and other variables were not significant. However, NIHL as dependent, the OR of hearing difficulty was 4.57(95 % C.1. : 1.43-14.67). According to multiple logistic regression adopting each items of questionnaire as dependent variable, the only item of hearing difficulty showed significant difference with hearing ability. The discrimination analysis was performed with the class variable of hearing impairment, and discrimination variables of age, work duration, and environment noise level. The sensitivity of 59 %, and specificity of 88 %, and average error count of 23 % were obtained. When the numbers of items answered in questionnaire were assumed as the parameter of judgement for noise induced hearing loss (NIHL), the highest sensitivity and specificity were 33.5% and 49.0% in cases of more than two items answered. CONCLUSIONS: The development of items that is simple and discriminative mainly consisted of chronic and specific diseases related items is needed. Computerization for newly developed items might be needed to establish effective surveillance system for NIHL in the future.
Discrimination (Psychology) ; Hearing Loss* ; Hearing* ; Logistic Models ; Mass Screening* ; Noise* ; Odds Ratio ; Questionnaires* ; Sensitivity and Specificity

No abstract available.
Blood Coagulation Factors* ; Fibrinogen*

No abstract available.
Blood Coagulation Factors* ; Fibrinogen*

No abstract available.
Lymphoma, Large-Cell, Anaplastic*

The clinicopathologic characteristics, treatments and prognosis of retinoblastoma, the most common intraocular tumor in children, were studied retrospectively in 101 cases(128eyes) who visited our clinic from 1987 to 1996. All patients were followed for 2 years or longer. Twenty seven cases were bilateral and seventy four cases were unilateral,. Eihgty four eyes were enucleated. Twenty one eyes were successfully treated by conservative modality. The rest refused any type of treatment. Orbital recurrence or distant metastasis were observed in 5 cases after enucleation without systemic treatment, and one died in spite of irradiation and aggressive chemotherapy. It is widely recognized that the prognosis for survival of retinoblastoma patients, especially unilateral, is excellent, however the authors emphasize the importance of careful postoperative histopathologic review and long term periodic follow-up to improve long-term prognosis.
Child ; Drug Therapy ; Follow-Up Studies ; Humans ; Neoplasm Metastasis ; Orbit ; Prognosis* ; Recurrence ; Retinoblastoma* ; Retrospective Studies

TURP is one of the common operations in the urologic field, and it has been well shown as a golden standard treatment modality for the patients with the BPH. Nevertheless, there was no available objective index to determine effective amount of the prostate resection. Therefore, we reviewed and evaluated the charts of 119 BPH patients more than 15 in modified Boyarsky symptom score evaluation, and who have undergone TURP from 1992 to June 1994. In addition, we excluded the cases associated with the other disease, such as neurogenic bladder, urethral stricture, or prostatic carcinoma. The volume of prostate was calculated by using of TRUS and ellipsoid formula. The maximal flow rate(MFR) was evaluated mostly on 5th post-operative volume of the day. We defined the resection rate(R.R) as the rate of the resected weight to the volume of the prostate. The results were as follows. 1. The mean resection rate of the prostate was 42.1%. 2. The average of the post-operative MFR was 20.52ml/sec. 3. The relevance between the RR and the post-operative MFR was not shown herein. 4. Distribution of the patients by the postoperative modified Boyarsky symptom score was different according to the resection rate. Statistically significant difference of the postoperative modified Boyarsky symptom score was shown between the greater than 30% resection group 1ess than 30% resection group(P=<0.05) 5. The post-operative modified Boyarsky symptom score could be predicted by the equation induced through the regression analysis. Symptom score = 5.28 - (0.04'RR) Our results suggest that resection rate of 30% is the marginal rate for the desirable voiding improvement, and, if it is practicable, the resection of more than 30% is favorable for all patients with BPH.
Humans ; Prostate ; Transurethral Resection of Prostate ; Urethral Stricture ; Urinary Bladder, Neurogenic

Radical cystectomy and/or radiotherapy represent the standard treatment for invasive bladder carcinoma. However these approaches are less than ideal since a substantial number of patients have progressive disease and die of metastatic cancer. Then recent treatment modality is trending toward chemotherapy. Therefore, we performed the aggressive transurethral resection of the bladder tumor (TURBt) followed by the combined chemotherapy of methotrexate, vinblastine, doxorubicin and cisplatin(RI-VAC) for conservative treatment of muscle invasive transitional cell carcinoma of the bladder. From July 1990 to March 1995, 41 patients with stage T2 to T4 were entered into the study. Of that patients, 26 completed 4 to 8 cycles of M-VAC and were followed, while 15 were excluded from the study because of incomplete chemotherapy or inadequate follow-up. Median follow-up was 30 months(4-56 months). Median age of the patients was 66 years(range 48 to 85 years). All patients had Karnofsky performance status(KPS) score between 70 and l00. There were 3 patients with clinical stage T2, 8 with T3a, 7 with T3b, 8 with T4. G-CSF(Granulocyte-Colony Stimulating Factor) was used for 19 patients with M-VAC induced leukopenia, thereby allowing the chemotherapy to be complete on schedule. Responses to therapy were evaluated according to standard accepted phase II response criteria. Overall clinical response (complete and partia1) was noted in 15 patients(58%), and no response in 11(42%). Of the patients with T2 and T3a, 9(82%) showed complete and partial response, and of them with T3b and T4, 6(40%) showed complete and partial response. Of 26 patients 21(81%) are alive now. These data suggest that survival was no better than expected following radical cystectomy or radiotherapy in short term follow-up, so far, however systemic M-VAC chemotherapy in combination with radical TURBt is probably expected to provide a high response rate and a better survival with the particular advantage of preserving normal bladder function in patients with superficially invasive bladder tumor(T2/T3a).
Appointments and Schedules ; Carcinoma, Transitional Cell ; Cystectomy ; Doxorubicin ; Drug Therapy ; Follow-Up Studies ; Humans ; Leukopenia ; Methotrexate ; Radiotherapy ; Urinary Bladder Neoplasms ; Urinary Bladder* ; Vinblastine

No abstract available.