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1.
Int J Radiat Oncol Biol Phys ; 84(1): 30-8, 2012 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-22331002

RESUMO

PURPOSE: To develop a patient decision aid (PtDA) for older women with Stage I, pathologically node negative, estrogen receptor-positive progesterone receptor-positive breast cancer who are considering adjuvant radiotherapy after lumpectomy and to examine its impact on patients' decision making. METHODS AND MATERIALS: A PtDA was developed and evaluated in three steps according to the Ottawa Decision Support Framework: (1) needs assessment (n = 16); (2) Pilot I to examine PtDA acceptability (n = 12); and (3) Pilot II, a pretest posttest (n = 38) with older women with estrogen receptor-positive progesterone receptor-positive breast cancer after lumpectomy who were receiving adjuvant radiation therapy. Measures included patients' satisfaction with the PtDA, self-reported decisional conflict, level of distress, treatment-related knowledge, and choice predisposition. RESULTS: The PtDA is a booklet that details each adjuvant treatment option's benefits, risks, and side effects tailored to the patient's clinical profile; includes a values clarification exercise; and includes steps to guide patients towards their decision. On the basis of qualitative comments and satisfaction ratings, all women thought that the PtDA was helpful and informative. In comparison with their baseline scores, patients had a statistically significant (p < 0.05) reduction in decisional conflict (adjusted mean difference [AMD], -7.18; 95% confidence interval [CI], -13.50 to 12.59); increased clarity of the benefits and risks (AMD, -10.86; CI, -20.33 to 21.49); and improved general treatment knowledge (AMD, 8.99; CI, 2.88-10.28) after using the PtDA. General trends were also reported in the patients' choice predisposition scores that suggested potential differences in treatment decision after PtDA use. CONCLUSIONS: This study provides evidence that this PtDA may be a helpful educational tool for this group of women. The quality of care for older breast cancer patients may be enhanced by the use of a tailored PtDA to help patients be better informed about their treatment options.


Assuntos
Neoplasias da Mama/radioterapia , Técnicas de Apoio para a Decisão , Folhetos , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Neoplasias da Mama/química , Neoplasias da Mama/patologia , Neoplasias da Mama/psicologia , Neoplasias da Mama/cirurgia , Comportamento de Escolha , Feminino , Humanos , Mastectomia Segmentar , Participação do Paciente , Projetos Piloto , Radioterapia Adjuvante/efeitos adversos , Radioterapia Adjuvante/métodos , Radioterapia Adjuvante/psicologia , Receptores de Estrogênio/análise , Inquéritos e Questionários
2.
Respir Med ; 102(1): 77-81, 2008 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-17904834

RESUMO

BACKGROUND: Orally inhaled corticosteroids represent the usually recommended initial controller therapy for most patients with persistent asthma. Some patients might benefit from earlier use of a combination of an inhaled corticosteroid and an orally inhaled long-acting beta agonist, however. We wished to identify clinical characteristics of patients which would enable one to identify a sub-group of patients who would benefit most from initiating sustained controller therapy with combination therapy. METHODS: We carried out a secondary analysis of five randomized clinical trials including 1606 subjects in order to examine whether differences in baseline characteristics of patients might predict a greater preferential response to combination therapy with salmeterol and fluticasone. RESULTS: Subjects whose asthma had been present for 10 or more years were 2.2 times more likely to achieve well-controlled asthma by 12 weeks on combination therapy, while subjects with a shorter duration of asthma were only 1.4 times as likely to achieve asthma control with combination therapy as opposed to inhaled corticosteroids alone. None of the other factors examined including symptom frequency or severity, rescue beta-agonist use, severity of lung function impairment or degree of reversibility, was able to distinguish subjects who would benefit preferentially from such combination therapy. CONCLUSIONS: Longer duration of asthma might be used to identify subjects who will benefit more from combined maintenance therapy with a long-acting beta agonist and an inhaled corticosteroid rather than an inhaled corticosteroid alone.


Assuntos
Corticosteroides/administração & dosagem , Albuterol/análogos & derivados , Androstadienos/administração & dosagem , Asma/tratamento farmacológico , Broncodilatadores/administração & dosagem , Administração por Inalação , Adolescente , Adulto , Albuterol/administração & dosagem , Criança , Quimioterapia Combinada , Feminino , Fluticasona , Humanos , Masculino , Ensaios Clínicos Controlados Aleatórios como Assunto , Xinafoato de Salmeterol , Resultado do Tratamento
3.
Maturitas ; 61(1-2): 107-21, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-19434884

RESUMO

OBJECTIVE: To develop a condition-specific quality of life questionnaire for the menopause with documented psychometric properties, based on women's experience. SUBJECTS: Women 2-7 years post-menopause with a uterus and not currently on hormone replacement therapy. Questionnaire development: A list of 106 menopause symptoms was reduced using the importance score method. Replies to the item-reduction questionnaire from 88 women resulted in a 30-item questionnaire with four domains, vasomotor, physical, psychosocial and sexual, and a global quality of life question. Psychometric properties: A separate sample of 20 women was used to determine face validity, and a panel of experts was used to confirm content validity. Reliability, responsiveness and construct validity were determined within the context of a randomized controlled trial. Construct validation involved comparison with the Neugarten and Kraines' Somatic, Psychosomatic and Psychologic subscales, the reported intensity of hot flushes, the General Well-Being Schedule, Channon and Ballinger's Vaginal Symptoms Score and Libido Index, and the Life Satisfaction Index. RESULTS: The face validity score was 4.7 out of a possible 5. Content validity was confirmed. Test-retest reliability measures, using intraclass correlation coefficients were 0.81, 0.79, 0.70 and 0.55 for the physical, psychosocial, sexual domains and the quality of life question. The intraclass correlation coefficient for the vasomotor domain was 0.37 but there is evidence of systematic change. Discriminative construct validity showed correlation coefficients of 0.69 for the physical domain, 0.66 and 0.40 for the vasomotor domain, 0.65 and -0.71 for the psychosocial domain, 0.48 and 0.38 for the sexual domain, and 0.57 for the quality of life question. Evaluative construct validity showed correlation coefficients of 0.60 for the physical domain, 0.28 for the vasomotor domain, 0.55 and - 0.54 for the psychosocial domain, 0.54 and 0.32 for the sexual domain, and 0.12 for the quality of life question. Responsiveness scores ranged from 0.78 to 1.34. CONCLUSIONS: The MENQOL (Menopause-Specific Quality of Life) questionnaire is a self-administered instrument which functions well in differentiating between women according to their quality of life and in measuring changes in their quality of life.

4.
Pediatr Pulmonol ; 42(12): 1117-24, 2007 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-17960807

RESUMO

INTRODUCTION: Asthma guidelines have suggested that treatment decisions should be guided by indices of asthma control and not only by disease severity. In adults, symptom-based asthma control parameters have been shown to predict exacerbations and health care services use (HSU). We hypothesize that defining asthma control using parent-reported symptoms alone is not adequate in children. MATERIALS AND METHODS: Cross-sectional data from the population-based asthma in Canada study were reanalyzed. Random-digit dialing was used to produce the final sample, consisting of 1,001 asthmatics: 801 adults (aged 16+) and 200 children (aged 4-15) participating by parental proxy. Weighted frequencies of Canadian guideline defined asthma control parameters, perceived asthma control, HSU and medication use were calculated separately for adults and children. Stratified analyses compared HSU in controlled versus uncontrolled asthmatics. RESULTS: Over 90% of parents of asthmatic children believed their child's asthma to be controlled. Only 45% were actually controlled as defined by guideline parameters. Among controlled asthmatics, children reported higher HSU (32% reported 2+ health care encounters versus 17% of adults, P < 0.001). Irrespective of control and despite similar use of controller therapy, children reported a higher number of health care encounters than adults (any emergency department visits 37% vs. 24%, P = 0.00003; unscheduled doctor visits 59% vs. 36%, P < 0.00001). While reporting higher HSU, asthmatic children had less frequent episodes of excessive daytime symptoms than adults (29% vs. 49%, respectively, P < 0.0001). DISCUSSION: Current symptom-based asthma control parameters reported by parental proxy are likely poor predictors of asthma HSU and may not provide adequate asthma control estimates in children.


Assuntos
Asma/prevenção & controle , Relações Pais-Filho , Notificação aos Pais , Índice de Gravidade de Doença , Adolescente , Adulto , Asma/epidemiologia , Criança , Pré-Escolar , Feminino , Humanos , Masculino , Ontário/epidemiologia , Estudos Retrospectivos , Prevenção Secundária , Inquéritos e Questionários
5.
Respir Med ; 101(11): 2240-7, 2007 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-17686624

RESUMO

RATIONALE: Obesity may contribute to the development and clinical expression of asthma. However, how obesity can influence response to asthma medications is still uncertain. OBJECTIVES: To examine the relationship between body mass index (BMI) and the response to an inhaled corticosteroid (ICS), fluticasone propionate, with or without the long-acting beta2-agonist salmeterol (LABA). METHODS: Achievement of asthma control as defined by the global initiative on asthma guidelines (GINA) was examined in 1242 asthmatic patients not currently using ICS, enrolled in five clinical trials comparing fluticasone propionate and the combination of fluticasone and salmeterol. RESULTS: In both obese and non-obese subjects, fluticasone propionate combined with salmeterol was more effective in controlling asthma than fluticasone alone. However, for both treatments the odds of achieving well-controlled asthma were significantly lower in obese subjects, particularly among those with a BMI of >or=40 kg/m2. Reported prevalence of atopy increased with BMI. Age did not influence the effect of obesity in response to asthma medications. CONCLUSION: Obese patients are less likely than the non-obese to achieve asthma control with an ICS or an ICS combined with a LABA. The causes of such reduced response to asthma medication in obese subjects should be studied, and their implications for asthma therapy determined.


Assuntos
Agonistas Adrenérgicos beta/uso terapêutico , Albuterol/análogos & derivados , Androstadienos/uso terapêutico , Antiasmáticos/uso terapêutico , Asma/tratamento farmacológico , Obesidade , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Albuterol/uso terapêutico , Índice de Massa Corporal , Quimioterapia Combinada , Feminino , Fluticasona , Volume Expiratório Forçado/efeitos dos fármacos , Humanos , Masculino , Pessoa de Meia-Idade , Razão de Chances , Estudos Retrospectivos , Xinafoato de Salmeterol
6.
Biotechnol Annu Rev ; 11: 381-9, 2005.
Artigo em Inglês | MEDLINE | ID: mdl-16216784

RESUMO

Non-Hodgkin's lymphoma (NHL) remains an important complication of associated HIV infection despite advances in antiretroviral therapy (ART), and the optimum chemotherapy regimen for this disease remains to be defined. A dose-escalation trial was performed to determine the maximum tolerated doses of etoposide and doxorubicin as part of the 12-week VACOP-B regimen, supported by filgrastim (r-metHuG-CSF). Patients with aggressive histology HIV-related NHL who were previously untreated with chemotherapy, and who had no active opportunistic infection were eligible for the study. Chemotherapy consisted of cyclophosphamide 350 mg/m2, vincristine 2 mg, bleomycin 10 U/m2; and prednisone 100 mg q2 days x 12 weeks, with increasing doses of doxorubicin 25-50 mg/m2 and etoposide 25-50 mg/m2 intravenously and 50-100 mg/m2 orally. Central nervous system prophylaxis (intrathecal cytarabine 50 mg x 4 doses), antifungal, and Pneumocystis carinii prophylaxis were used, and filgrastim was administered to prevent neutropenic complications. One dose level was expanded to permit the concomitant use of ART. Endpoints were determination of maximum tolerated dose of doxorubicin and etoposide, treatment tolerability, and survival. Forty-seven patients were enrolled, most with diffuse large-cell or immunoblastic NHL. Protocol-defined maximum tolerated dose was not reached and the limits of dose-limiting toxicity were not exceeded, even in patients receiving ART. Thirty-two cycles (4.9%) were delayed >6 days because of toxicity; 30 patients (64%) completed all 12 weeks of treatment. After completion of therapy, 14 patients had a complete response (30%), and 4 had a partial response (8%). Median time to progression was 9 months. At 42 months, progression-free survival was 25% and overall survival was 28%.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Linfoma Relacionado a AIDS/tratamento farmacológico , Linfoma não Hodgkin/tratamento farmacológico , Administração Oral , Adulto , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Bleomicina/efeitos adversos , Bleomicina/uso terapêutico , Contagem de Linfócito CD4 , Ciclofosfamida/efeitos adversos , Ciclofosfamida/uso terapêutico , Relação Dose-Resposta a Droga , Doxorrubicina/administração & dosagem , Doxorrubicina/efeitos adversos , Doxorrubicina/uso terapêutico , Etoposídeo/administração & dosagem , Etoposídeo/efeitos adversos , Etoposídeo/uso terapêutico , Feminino , Filgrastim , Fator Estimulador de Colônias de Granulócitos/administração & dosagem , Humanos , Injeções Intravenosas , Injeções Subcutâneas , Masculino , Pessoa de Meia-Idade , Prednisona/efeitos adversos , Prednisona/uso terapêutico , Estudos Prospectivos , Proteínas Recombinantes , Análise de Sobrevida , Resultado do Tratamento , Vincristina/efeitos adversos , Vincristina/uso terapêutico
7.
Int J Radiat Oncol Biol Phys ; 61(5): 1473-81, 2005 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-15817353

RESUMO

PURPOSE: To determine the proportion of patients undergoing palliative radiotherapy (RT) for bone pain who would like to participate in the decision-making process, and to determine their choice of palliative RT regimen (2000 cGy in five fractions vs. 800 cGy in one fraction) for painful bone metastases. METHODS AND MATERIALS: Eligible patients were approached and all patients agreeing to participate provided written informed consent. Patients' decisional preferences were studied using a five-statement preference instrument. A decision board was used to help patients decide their preferred palliative RT regimen. Factors influencing patients' choices were studied using a visual analog scale. RESULTS: A total of 101 patients were enrolled in the study (55 women and 46 men). The preferences for decision-making were as follows: 30 active, 47 collaborative, and 24 passive. Most (55 [76%] of 72) patients favored one fraction of palliative RT (95% confidence interval, 65-86%). Patients were more likely to select the 800 cGy in one fraction because of the convenience of the treatment plan (odds ratio, 1.024; 95% confidence interval, 1.004-1044) but were less likely to choose it because of the chance of bone fracture (odds ratio, 0.973; 95% confidence interval, 0.947-1.000) compared with 2000 cGy in five fractions. CONCLUSION: Most participating patients preferred to decide either by themselves or with the radiation oncologists which treatment option they preferred. An 800-cGy-in-one-fraction regimen was favored, independent of the treated site. The convenience of the treatment plan and the likelihood of bone fracture were the most important factors influencing patients' choice.


Assuntos
Neoplasias Ósseas/radioterapia , Neoplasias Ósseas/secundário , Cuidados Paliativos/métodos , Participação do Paciente , Satisfação do Paciente , Idoso , Neoplasias Ósseas/psicologia , Intervalos de Confiança , Tomada de Decisões , Fracionamento da Dose de Radiação , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Cuidados Paliativos/psicologia , Inquéritos e Questionários
8.
Can Fam Physician ; 51: 1504-5, 2005 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-16926942

RESUMO

OBJECTIVE: To determine family physicians' availability to their general practice patients after hours and to explore the characteristics and determinants of after-hours services. DESIGN: Secondary analysis of the 2001 National Family Physician Workforce Survey. SETTING: Canada. PARTICIPANTS: Canadian family physicians and general practitioners currently in practice (n = 10,553). MAIN OUTCOME MEASURES: Provision of after-hours care, defined as providing care to all practice patients outside of normal office hours. RESULTS: Sixty-two percent of Canadian family physicians reported providing after-hours service. The lowest rates were found in Quebec (34%) and the highest in Alberta and Saskatchewan (88%). Respondents practising in academic and community clinics, offering selective medical services (emergency care, palliative care, housecalls, after-hours care), or living outside of Ontario or Quebec were more likely to provide after-hours care. Women physicians, those practising in walk-in clinics, or physicians primarily paid by fee-for-service were less likely to do so. Urban versus rural location, organization of practice (solo or group), age of physician, country of graduation, and physician satisfaction were not found to significantly affect the likelihood of providing after-hours services. CONCLUSION: Knowledge of these factors can be used to inform policy development for after-hours service arrangements, which is particularly relevant today, given provincial governments' interests in exploring alternative payment plans and primary care reform options.


Assuntos
Plantão Médico/estatística & dados numéricos , Medicina de Família e Comunidade/estatística & dados numéricos , Adulto , Canadá , Feminino , Pesquisas sobre Atenção à Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Admissão e Escalonamento de Pessoal
9.
Int J Radiat Oncol Biol Phys ; 59(5): 1439-45, 2004 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-15275730

RESUMO

PURPOSE: To evaluate the role of abdominal-pelvic radiotherapy (APR) as adjuvant treatment for uterine papillary serous carcinoma (UPSC). METHODS AND MATERIAL: The medical records database at the Toronto-Sunnybrook Regional Cancer Centre identified 121 patients with the diagnosis of UPSC between 1980 and 2001. Fifty-nine patients received APR as adjuvant treatment. A retrospective chart review was done to evaluate recurrence rates, sites of failure, and treatment toxicity. RESULTS: Of 59 patients who received APR, 30 had advanced-stage disease (Stage III or IV). Eleven had complete surgical staging. Median follow-up was 71 months. Twenty-five of 59 (42%) recurred, with a median time to relapse of 50 months. Five-year disease-free survival was 43%, and 5-year overall survival was 45%. Of the 25 who recurred, only 3 experienced a sole failure outside the irradiated volume. Thirteen women had their treatment interrupted or discontinued because of toxicity. CONCLUSIONS: This single-institution study reveals that there is a high recurrence rate despite APR, especially among patients with advanced stage disease, and the majority of recurrences continue to be within the irradiated volume. The role of APR remains undefined in early disease but its effectiveness is questionable in advanced disease. Innovative strategies are needed to improve outcome in these patients.


Assuntos
Cistadenocarcinoma Papilar/radioterapia , Cistadenocarcinoma Seroso/radioterapia , Neoplasias Uterinas/radioterapia , Abdome , Idoso , Idoso de 80 Anos ou mais , Cistadenocarcinoma Papilar/patologia , Cistadenocarcinoma Papilar/cirurgia , Cistadenocarcinoma Seroso/patologia , Cistadenocarcinoma Seroso/cirurgia , Intervalo Livre de Doença , Feminino , Seguimentos , Humanos , Pessoa de Meia-Idade , Recidiva Local de Neoplasia , Estadiamento de Neoplasias , Pelve , Radioterapia/métodos , Radioterapia Adjuvante , Estudos Retrospectivos , Neoplasias Uterinas/patologia , Neoplasias Uterinas/cirurgia
10.
J Health Soc Policy ; 16(4): 75-84, 2003.
Artigo em Inglês | MEDLINE | ID: mdl-12943333

RESUMO

This paper reports on the utilization of complementary/alternative medicine (CAM) services by women with breast cancer. Study participants were women with invasive breast cancer diagnosed 23-36 months prior to contact about the study, and randomly selected from the Ontario Cancer Registry. From among 1,119 eligible women sent survey questionnaires, 731 returned completed questionnaires (65%). A total of 20% of respondents used at least 1 CAM service. Among those who responded to a question about whether they would have liked specific services, 39% reported that there was at least one CAM service they would have liked to use, but were unable to access. Factors shown to be related to greater utilization of services included: younger age, higher household income, employed or student status, private health insurance coverage, and having received chemotherapy. Study results speak to the importance of acknowledging that professionals outside of the formal cancer care system play an important role for many patients. Patients would welcome experimentation with service models in which CAM practitioners and cancer specialists collaborate in providing care.


Assuntos
Neoplasias da Mama/terapia , Terapias Complementares/estatística & dados numéricos , Idoso , Feminino , Humanos , Pessoa de Meia-Idade , Ontário , Distribuição Aleatória , Sistema de Registros , Inquéritos e Questionários , Revisão da Utilização de Recursos de Saúde
11.
Leuk Lymphoma ; 44(6): 955-62, 2003 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-12854893

RESUMO

Practices regarding central nervous system (CNS) prophylaxis and treatment for non-"high-grade" lymphomas are not standardized. We designed a survey to address the CNS surveillance, prophylaxis and treatment (S + P + T) habits of Ontario oncologists, to compare tertiary with community care and gauge interest in a randomized controlled trial (RCT). We mailed 145 questionnaires to oncologists/hematologists registered at the Royal College of Physicians and Surgeons of Ontario between 1980 and 1999. The questionnaire posed questions of S + P + T for a variety of histologies, locations and risk factors. Results showed that 49/77 respondents treated adult NHL, (19 community, 30 tertiary care). Surveillance LP's were commonly done in testicular, orbital, sinus and epidural sites of presentation (76, 69, 71, 80%, respectively), but these were less commonly prophylaxed (45, 33, 29 and 41%). HIV associated NHL received surveillance and prophylaxis by 51 and 33% of respondents. Stage IV disease, increased LDH and extranodal-sites warranted infrequent S + P. IT chemotherapy via LP was the most commonly used form of prophylaxis (74%) or treatment (84%). Twenty percent used systemic agents that cross the blood brain barrier for prophylaxis, and 45% for treatment. A vast heterogeneity of practice within and between tertiary care and community physicians' practices was documented. Ninety percent of physicians indicated willingness to participate in a RCT. In conclusion, CNS surveillance and prophylaxis in non-"high-grade" NHL is highly variable, probably because there are poorly defined risk factors, inconclusive prophylaxis efficacy and the inconvenience/toxicity of therapy. Patients at high risk by International prognostic index criteria are at an increased risk for CNS relapse. A RCT comparing standard chemotherapy with or without CNS prophylaxis in selected patients is needed.


Assuntos
Neoplasias do Sistema Nervoso Central/prevenção & controle , Neoplasias do Sistema Nervoso Central/secundário , Linfoma não Hodgkin/tratamento farmacológico , Adulto , Antineoplásicos/uso terapêutico , Neoplasias do Sistema Nervoso Central/tratamento farmacológico , Neoplasias do Sistema Nervoso Central/radioterapia , Infecções por HIV/complicações , Humanos , Linfoma não Hodgkin/patologia , Masculino , Estadiamento de Neoplasias , Ontário , Padrões de Prática Médica , Prognóstico , Fatores de Risco , Inquéritos e Questionários
12.
J Cancer Educ ; 18(2): 86-90, 2003.
Artigo em Inglês | MEDLINE | ID: mdl-12888382

RESUMO

BACKGROUND: This paper describes the development of the Rapid Response Radiotherapy Program and evaluates the continuing medical education (CME) series, in the form of multidisciplinary monthly Radiation Oncology Palliative Care Rounds at the Toronto Sunnybrook Regional Cancer Centre. METHODS: Palliative care rounds were initiated by the multidisciplinary committee in September, 1998. From January, 2000, to June, 2002, attendees used a standard 5- point Likert rating scale to conduct formal evaluations. RESULTS: A total of 203 evaluation forms examining 20 rounds have been collected. Findings indicated that 86.8, 96.0, 87.1, and 90.8% of participants thought the material of the presentation was relevant to their practice, interesting, and instructional. Overall 90.1% of the respondents highly rated the grand rounds (rating of 4 or 5). CONCLUSION: The grand rounds are an effective CME activity at our hospital.


Assuntos
Educação Médica Continuada/métodos , Neoplasias/radioterapia , Cuidados Paliativos , Radioterapia (Especialidade)/educação , Atitude do Pessoal de Saúde , Institutos de Câncer , Humanos , Ontário , Equipe de Assistência ao Paciente , Médicos , Avaliação de Programas e Projetos de Saúde , Radioterapia (Especialidade)/métodos
13.
Cancer ; 97(8): 1904-8, 2003 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-12673716

RESUMO

BACKGROUND: The authors evaluated clinical and pathologic factors that predicted for recurrence after patients underwent radical surgery for International Federation of Gynecology and Obstetrics (FIGO) Stage IA(2)-IB(1-2) cervical carcinoma and developed a simple method of scoring those predictive factors to quantify outcome. METHODS: An analysis was conducted of a prospective radical surgery cervical carcinoma data base. A Cox proportional hazards regression analysis was done for each of the individual factors to estimate individual risk ratios using all available data for each factor. Stepwise and best-model options were used to identify the best combinations as predictors and to calculate adjusted risk ratios. Based on the information obtained, each patient was assigned a categorical score to predict recurrence. The variables used for the score were dichotomized. The differences between the scores in time to recurrence were evaluated using the log-rank test to compare the time to recurrence curves that were generated with the Kaplan-Meier method. RESULTS: Eight hundred seventy-one patients were included in the study, and 66 patients who developed recurrent disease after a median follow-up of 49 months. Tumor size, maximum depth of invasion, pelvic lymph node status, tumor grade, and capillary lymphatic space (CLS) were single predictors for recurrence, and the score, which was based on combinations of these factors, predicted the disease free survival. Maximum depth of invasion, pelvic lymph node status, and CLS were the best combined predictors for recurrence, and they were used to form a second, precise scoring system to predict disease free survival (P < 0.0001; log-rank test). CONCLUSIONS: The scoring system based on maximal depth of invasion, CLS, and pelvic lymph node metastases identified four strata of patients with distinct recurrence free survival. The incremental presence of each factor decreased recurrence free survival after patients underwent radical surgery. Patients with the presence of all three factors had a 5-year recurrence free survival rate of 65%. These patients would be suitable for studies of postoperative adjuvant therapy to improve outcome.


Assuntos
Recidiva Local de Neoplasia/patologia , Neoplasias do Colo do Útero/patologia , Neoplasias do Colo do Útero/cirurgia , Adulto , Idoso , Intervalo Livre de Doença , Feminino , Humanos , Histerectomia , Excisão de Linfonodo , Pessoa de Meia-Idade , Invasividade Neoplásica , Estadiamento de Neoplasias , Prognóstico , Estudos Prospectivos , Radioterapia Adjuvante , Fatores de Risco , Taxa de Sobrevida
14.
Breast Cancer Res Treat ; 77(3): 285-93, 2003 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-12602928

RESUMO

PURPOSE: To assess how women with ductal carcinoma in situ (DCIS) perceive their risks of recurrence, dying from breast cancer, and psychological distress compared to women with early stage invasive breast cancer (EIBC). PATIENTS AND METHODS: Eligible patients included those with DCIS or EIBC (T1 or T2, N0) referred to one cancer center between November 1998 and June 1999. Participants completed a self-administered survey regarding their views of their risks of developing recurrent cancer, of dying of breast cancer and the presence of psychological symptoms of distress. Responses were scored and compared between the two groups. RESULTS: In total, 495 patients were screened, 240 found ineligible, 228 patients who agreed to participate. No significant difference between the two groups was observed in perceptions of risk related to the likelihood of developing local recurrence (DCIS: 53%, EIBC 45%, P = 0.14), distant recurrence (DCIS: 36%; EIBC: 39%, P = 0.35) or dying of breast cancer (DCIS: 27%, EIBC 27%, P = 0.5). Both groups expressed similar levels of psychological distress (anxiety, DCIS: 56%, EIBC 54%, P = 0.38; depression, DCIS: 41%, EIBC, 48%, P = 0.17). CONCLUSIONS: Despite the excellent prognosis, women with DCIS express serious concerns and report similar psychological morbidity as women with invasive cancer.


Assuntos
Atitude , Neoplasias da Mama/psicologia , Carcinoma Ductal de Mama/psicologia , Carcinoma Intraductal não Infiltrante/psicologia , Recidiva Local de Neoplasia/psicologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias da Mama/patologia , Carcinoma Ductal de Mama/patologia , Carcinoma Intraductal não Infiltrante/patologia , Feminino , Humanos , Pessoa de Meia-Idade , Metástase Neoplásica , Fatores de Risco , Inquéritos e Questionários
15.
Support Care Cancer ; 10(8): 647-52, 2002 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-12436224

RESUMO

Breast cancer patients' utilisation of supportive care has been understudied. In this paper, results from a population-based survey are used to assess the role of physicians and nurses in providing supportive care to women. Participants for this study were women with histologically confirmed invasive breast cancer diagnosed 23-36 months prior to contact about the study, who were randomly selected from the Ontario Cancer Registry. Patients for whom a physician approved contact were sent a survey questionnaire. There were two follow-up mailings. The survey included items related to patients' perceptions of supportive care involvement of oncologists, surgeons, family physicians and nurses. Among 1,119 eligible patients, 65% returned completed questionnaires. A total of 72% of these women reported having talked with an oncologist about one or more supportive care issues; 78% with a surgeon; 73% with a family physician; and 45% with a nurse. Factors linked to seeking supportive care from physicians and/or nurses included: younger age, working status, higher education, additional health insurance beyond that provided by government, higher household income, and receiving chemotherapy. Results indicate that physicians and nurses were providing important supportive care to most women with breast cancer. In a health care context where specialised supportive care services (e.g. help from dietitians, psychologists, social workers) are often unavailable or difficult to access, supportive care remains largely a responsibility of medical and nursing professionals. Even brief interventions may make an important difference to how patients deal with their illness over time.


Assuntos
Neoplasias da Mama/terapia , Oncologia/estatística & dados numéricos , Enfermagem Oncológica/estatística & dados numéricos , Satisfação do Paciente/estatística & dados numéricos , Apoio Social , Adulto , Idoso , Neoplasias da Mama/psicologia , Institutos de Câncer/estatística & dados numéricos , Feminino , Humanos , Oncologia/métodos , Pessoa de Meia-Idade , Enfermagem Oncológica/métodos , Ontário/epidemiologia , Relações Profissional-Paciente
16.
Int J Radiat Oncol Biol Phys ; 54(3): 661-9, 2002 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-12377316

RESUMO

PURPOSE: To measure patient-based minimal clinically important effect sizes (minimal incremental benefit that an individual would require to accept one treatment option over another) for pain relief between two contrasting palliative radiotherapy regimens for painful pelvic recurrences from rectal cancer. METHODS AND MATERIALS: Forty-three patients with a history of cancer pain without prior pelvic radiotherapy participated in decision aid-facilitated trade-off exercises. The clinical scenario and treatment options of a 5-day vs. a 20-day course of radiotherapy were described. The duration of pain relief for the 20-day regimen was increased until the respondents' preferences switched to the 20-day regimen. The exercises were repeated for different probabilities of benefit and pain intensity at the time of decision making. RESULTS: When the probability of pain relief was unchanged, the median switch point for the duration of pain relief was 6.7 and 7.2 months for severe and mild pain, respectively. The cumulative percentage frequency curve for the switch points approximated a sigmoid distribution. CONCLUSION: Determining the minimal clinically important effect sizes for symptom relief for palliative therapies is feasible. This type of information can be used to incorporate patient values into clinical trial designs. Modification of this method can be used to improve our understanding of shared (physician and patient) decision making.


Assuntos
Tomada de Decisões , Dor/radioterapia , Cuidados Paliativos , Participação do Paciente , Neoplasias Retais/radioterapia , Técnicas de Apoio para a Decisão , Estudos de Viabilidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Dor/etiologia , Medição da Dor , Neoplasias Pélvicas/radioterapia , Neoplasias Retais/complicações
17.
Nat Med ; 8(10): 1153-60, 2002 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-12244302

RESUMO

Mechanisms linking mitogenic and growth inhibitory cytokine signaling and the cell cycle have not been fully elucidated in either cancer or in normal cells. Here we show that activation of protein kinase B (PKB)/Akt, contributes to resistance to antiproliferative signals and breast cancer progression in part by impairing the nuclear import and action of p27. Akt transfection caused cytoplasmic p27 accumulation and resistance to cytokine-mediated G1 arrest. The nuclear localization signal of p27 contains an Akt consensus site at threonine 157, and p27 phosphorylation by Akt impaired its nuclear import in vitro. Akt phosphorylated wild-type p27 but not p27T157A. In cells transfected with constitutively active Akt(T308DS473D)(PKB(DD)), p27WT mislocalized to the cytoplasm, but p27T157A was nuclear. In cells with activated Akt, p27WT failed to cause G1 arrest, while the antiproliferative effect of p27T157A was not impaired. Cytoplasmic p27 was seen in 41% (52 of 128) of primary human breast cancers in conjunction with Akt activation and was correlated with a poor patient prognosis. Thus, we show a novel mechanism whereby Akt impairs p27 function that is associated with an aggressive phenotype in human breast cancer.


Assuntos
Transporte Ativo do Núcleo Celular/fisiologia , Quinases relacionadas a CDC2 e CDC28 , Proteínas de Ciclo Celular/metabolismo , Fase G1/fisiologia , Proteínas Proto-Oncogênicas/metabolismo , Proteínas Supressoras de Tumor/metabolismo , Neoplasias da Mama/metabolismo , Neoplasias da Mama/patologia , Proteínas de Ciclo Celular/genética , Linhagem Celular , Ciclina E/metabolismo , Quinase 2 Dependente de Ciclina , Inibidor de Quinase Dependente de Ciclina p27 , Quinases Ciclina-Dependentes/metabolismo , Inibidores Enzimáticos/metabolismo , Feminino , Humanos , Proteínas Quinases Ativadas por Mitógeno/metabolismo , Mutagênese Sítio-Dirigida , Fosfatidilinositol 3-Quinases/metabolismo , Inibidores de Fosfoinositídeo-3 Quinase , Proteínas Serina-Treonina Quinases/metabolismo , Proteínas Proto-Oncogênicas/genética , Proteínas Proto-Oncogênicas c-akt , Proteínas Recombinantes de Fusão/genética , Proteínas Recombinantes de Fusão/metabolismo , Taxa de Sobrevida , Treonina/metabolismo , Fator de Crescimento Transformador beta/metabolismo , Proteínas Supressoras de Tumor/genética
18.
Support Care Cancer ; 10(5): 408-15, 2002 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-12136224

RESUMO

Our primary objective was to determine the content and format that is most suitable for educational events targeting patients and carers who are living with advanced cancer. Secondary objectives included examining the differences in information needs between patients and their carers, and providing an estimate of the rate of participation in educational events targeting such patients and carers. Out-patients receiving palliative radiotherapy at Toronto Sunnybrook Regional Cancer Center and their carers were invited to complete the Advanced Cancer Information Needs Survey. One hundred forty-four respondents participated in the survey. The participants identified the management of pain, fatigue, and home palliative care resources as the areas in which information was most needed. Carers displayed greater interest, and the range of topics in which they continue to seek additional information is wider. Thirty-one percent of respondents said they would participate in an educational event. A 'one-on-one' interview approach and short written materials were the preferred sources of information. Our study examined potential content areas and preferred format for proposed educational events targeting patients and carers living with advanced cancer. We also highlighted the reasons for, and potential limitations of this approach. The investment of future effort in evaluating the impact of 1 on 1 interviews and 'short written materials' on the informational needs of patients and carers living with advanced cancer is warranted.


Assuntos
Cuidadores/psicologia , Neoplasias/psicologia , Educação de Pacientes como Assunto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Avaliação das Necessidades , Neoplasias/radioterapia , Inquéritos e Questionários
19.
Int J Radiat Oncol Biol Phys ; 53(4): 987-91, 2002 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-12095567

RESUMO

PURPOSE: To evaluate the efficacy and toxicity of fractionated stereotactic radiotherapy (FSRT) for vestibular schwannomas in patients treated at two university-affiliated hospitals. METHODS AND MATERIALS: Thirty-nine patients were treated between April 1996 and September 2000. The median age was 56 years (range: 29-80), and median maximal tumor diameter was 20 mm (range: 9-40). A total of 11 patients had fifth and/or seventh cranial nerve dysfunction before irradiation; 2 patients had only facial weakness, 5 patients had only facial numbness, and 4 patients had both facial weakness and numbness. Thirty-three patients were treated with primary FSRT, and 6 patients were treated for recurrent or persistent disease after previous surgery. All patients were treated with 6-MV photons using a stereotactic system with a relocatable frame. The 39 patients received 50 Gy in 25 fractions over 5 weeks. Median follow-up was 21.8 months (range: 4.4-49.6). RESULTS: Local control was achieved in 37 patients (95%). Two patients experienced deterioration of their symptoms at 3 and 20 months as a result of clinical progression in one case and tumor progression in the other and underwent surgery post FSRT. A total of 19/28 (67.9%) patients preserved serviceable hearing after FSRT. Deterioration of the facial and trigeminal nerves was observed in only 2 patients who were treated with surgery post FSRT. CONCLUSION: FSRT provided excellent tumor control with minimal morbidity and good hearing preservation in this cohort of patients. Longer follow-up is required to confirm long-term control rates.


Assuntos
Neurilemoma/cirurgia , Radiocirurgia/métodos , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Coortes , Progressão da Doença , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Aceleradores de Partículas , Fótons , Fatores de Tempo , Tomografia Computadorizada por Raios X , Resultado do Tratamento
20.
Br J Haematol ; 116(1): 122-7, 2002 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-11841404

RESUMO

In lymphomas an innate defect in the T-cell repertoire could account for the impaired tumour-specific immune response; alternatively, the tumour itself could exert an inhibitory effect on the immune system. To address this issue we analysed the T-cell responses against follicular lymphoma (FL) in identical twins as it can be postulated that their overall T-cell repertoire is identical. While differences between the T-cell response of the patient and the healthy twin would point to a tumour-induced T-cell unresponsiveness, impaired responses in both would point to a defective T-cell repertoire. We demonstrated an impaired tumour-specific proliferation (P = 0.035 and P = 0.013) and cytokine release (P = 0.004 and P = 0.0008) of both peripheral blood and tumour-derived T-cells, respectively, in the FL patient compared with the T-cell response of the healthy twin. Moreover, only syngeneic primed T cells were able to directly lyse unmodified FL cells of the patient. These data support previous findings in murine lymphomas and suggest that inhibitory mechanisms during tumour growth, rather than a defective T-cell repertoire, are responsible for the insufficient T-cell response in lymphoma.


Assuntos
Doenças em Gêmeos , Linfoma Folicular/imunologia , Linfócitos T/imunologia , Adulto , Divisão Celular , Testes Imunológicos de Citotoxicidade , Humanos , Interferon gama/metabolismo , Ativação Linfocitária , Linfócitos do Interstício Tumoral/imunologia , Masculino , Gêmeos Monozigóticos
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