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1.
J Rehabil ; 88(1): 23-25, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-38528876

RESUMO

The purpose of this study was to examine the relationship between assistive technology workplace accommodation (AT-WA) usage and employment status among racial/ethnic populations with disabilities. Chi-square tests and logistic regression were used to analyze secondary data from the 2015 Kessler Foundation National Employment and Disability Survey (KFNEDS). Results indicated that significantly more consumers who used AT-WA were currently working, and a significantly greater proportion of them were White. Moreover, a significantly lower proportion of those who did not use AT-WA had less expected odds of being currently employed. Specific implications are discussed to inform practices, policy, and/or future research.

2.
Scand J Pain ; 19(4): 765-777, 2019 Oct 25.
Artigo em Inglês | MEDLINE | ID: mdl-31287802

RESUMO

BACKGROUND AND AIMS: Chronic low back pain (chronic LBP) is the number one cause for years lived with disability among 301 diseases and injuries analyzed by The Global Burden of Disease study 2013. Insomnia is highly prevalent among people with chronic LBP. To explain the sleep-pain relationship, theoretical models propose that insomnia symptoms may be associated with increased basal inflammation, operationalized as c-reactive protein (CRP) and lead to further pain and disrupted sleep. We aimed to determine the associations between insomnia, chronic LBP, and inflammation (operationalized as CRP), whilst controlling for age, body mass index, smoking, physical activity, depression, anxiety and osteoarthritis. METHODS: A cross-sectional analysis of the third Nord-Trøndelag Health Study (2006-2008), a rural population survey of 50,666 participants in Norway aged 20-96 years. Insomnia (dichotomous) was defined according to the Diagnostic and Statistical Manual of Mental Disorders 5th Edition, and chronic LBP (dichotomous) as low back pain or stiffness lasting at least 3 months. Data for CRP were obtained from non-fasting serum samples and assessed via latex immunoassay methodology. We excluded participants with the following self-reported chronic somatic diseases: chronic heart failure, chronic obstructive pulmonary disease, rheumatoid arthritis, fibromyalgia or ankylosing spondylosis. Possible associations between presence of insomnia and presence of chronic LBP (dependent), and the level of CRP and presence of chronic LBP (dependent), were assessed using logistic regression models. The possible association between insomnia and CRP (dependent) was assessed using linear regression. Multivariable analyses were conducted adjusting for confounders stated in our aim that achieved p ≤ 0.2 in univariate regressions. We performed stratified analyses for participants with "Normal" (<3 mg/L) "Elevated" (3-10 mg/L) and "Very High" (>10 mg/L) levels of CRP. RESULTS: In our total included sample (n = 30,669, median age 52.6, 54% female), 6.1% had insomnia (n = 1,871), 21.4% had chronic LBP (n = 6,559), and 2.4% had both (n = 719). Twenty four thousand two hundred eighty-eight (79%) participants had "Normal" CRP, 5,275 (17%) had "Elevated" CRP, and 1,136 (4%) had "Very High" CRP. For participants with "Normal" levels of CRP, insomnia was associated with higher levels of CRP (adjusted B = 0.04, 95%CI [0.00-0.08], p = 0.046), but not for people with "Elevated" or "Very High" levels of CRP. There was an association between CRP and presence of chronic LBP in the total sample (adjusted OR = 1.01, [1.00-1.01], p = 0.013) and for people with "Normal" CRP (1.05, [1.00-1.10, p = 0.034]. Insomnia was associated with the presence of chronic LBP in the total sample (adjusted OR = 1.99, 95%CI [1.79-2.21], <0.001) and for people with "Normal", "Elevated" and "Very High". CONCLUSIONS: Individuals with insomnia have twice the odds of reporting chronic LBP. Insomnia, CRP and chronic LBP appear to be linked but the role of CRP appears to be limited. Longitudinal studies may help further explore the causal inference between insomnia chronic LBP, and inflammation. IMPLICATIONS: Given the strong relationship between insomnia and chronic LBP, screening and management of comorbid insomnia and chronic LBP should be considered in clinical practice. Further longitudinal studies are required to explore whether the presence of insomnia and increased inflammation affects the development of chronic LBP.

3.
Matern Child Health J ; 20(5): 1041-53, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-26728898

RESUMO

OBJECTIVES: Families, clinicians and policymakers desire improved delivery of health and related services for children with special health care needs (CSHCN). We analyzed factors associated with ease of use in obtaining such services. We also explored what were specific difficulties or delays in receiving services. By examining data from the National Survey of Children with Special Health Care Needs (NS-CSHCN 2009-2010) and using the revised criteria for "ease of use," we were able to assess the percentage of parents who reported that their experiences seeking services for their children met those criteria. METHODS: We performed Chi square tests to examine associations between the independent variables and their relationship to the difficulties or delays assessed in the survey; including: eligibility, availability of services, waiting lists, cost, and access to information. We used logistic regression to determine the association of meeting the "ease of use" criteria with socio-demographic, complexity of need, and access variables. RESULTS: Overall, a third of families of CSHCN (35.3 %) encounter difficulties, delays, or frustrations in obtaining health and related services. The lack of access to health and community services in this study fell most heavily on children from racial/ethnic minority backgrounds, those in poverty, and those with complex emotional/behavioral or developmental needs and functional limitations. CONCLUSIONS: for Practice CSHCN require services from a broad array of providers across multiple systems. Unfortunately, there are certain difficulties that hamper the accessibility of these systems. These findings underscore the need for both practice-level response and systems-level reform to ensure equitable distribution of health and community resources.


Assuntos
Serviços de Saúde da Criança/estatística & dados numéricos , Crianças com Deficiência/estatística & dados numéricos , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Necessidades e Demandas de Serviços de Saúde/estatística & dados numéricos , Disparidades em Assistência à Saúde/etnologia , Adolescente , Criança , Pré-Escolar , Crianças com Deficiência/psicologia , Etnicidade/estatística & dados numéricos , Feminino , Pesquisas sobre Atenção à Saúde , Humanos , Lactente , Masculino , Grupos Minoritários/estatística & dados numéricos , Pais , Assistência Centrada no Paciente , Fatores Socioeconômicos
4.
Injury ; 43(9): 1419-22, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21474130

RESUMO

INTRODUCTION: To review the outcome of patients with post-traumatic acute subdural haematoma (ASDH) before and after the establishment of a hospital trauma team at a designated trauma centre. METHOD: A retrospective analysis was conducted on 82 consecutive patients who underwent surgery for post-traumatic ASDH. The 'PRE' and 'POST' groups included patients admitted before and after the establishment of a hospital trauma team, respectively. Injury severity was assessed by the admission Glasgow coma score, imaging findings, and the revised trauma score. Clinical outcome measures were the hospital length of stay and the Glasgow outcome score (GOS) upon hospital discharge. RESULTS: The overall mortality rate was 53.7%. No significant difference was found between the PRE and POST groups. The mean length of hospital stay was also comparable between the two groups. The functional status of those who survived acute hospital care was significantly better in the POST group. Good outcome (GOS of 4 or 5) was achieved in 66.7% of the survivors in the POST group, compared with 25.0% in the PRE group (p=0.024). CONCLUSION: Post-traumatic ASDH carried a poor prognosis. The mortality rate and hospital length of stay of patients were not found to be reduced after the establishment of a hospital trauma team. The latter, however, was associated with significantly better functional outcome amongst survivors. Although causality cannot be established due to the multitude of factors which may have affected patient outcome, our findings nonetheless provide further support for the introduction of a multidisciplinary hospital trauma team for the optimal care of trauma patients.


Assuntos
Medicina de Emergência , Hematoma Subdural Agudo/mortalidade , Equipe de Assistência ao Paciente , Centros de Traumatologia , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Medicina de Emergência/métodos , Medicina de Emergência/estatística & dados numéricos , Feminino , Escala de Coma de Glasgow , Hematoma Subdural Agudo/fisiopatologia , Hematoma Subdural Agudo/cirurgia , Hong Kong/epidemiologia , Mortalidade Hospitalar , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Recuperação de Função Fisiológica , Estudos Retrospectivos , Taxa de Sobrevida , Fatores de Tempo , Índices de Gravidade do Trauma , Resultado do Tratamento , Adulto Jovem
6.
Chin J Integr Med ; 2011 Jul 30.
Artigo em Inglês | MEDLINE | ID: mdl-21805295

RESUMO

OBJECTIVE: To investigate the profile of concomitant use of Chinese medicine (CM) and Western medical treatment in neurosurgical patients. METHODS: A guided questionnaire survey was conducted on 309 Chinese patients under neurosurgical care in a teaching hospital in Hong Kong from June to July 2006. RESULTS: Concomitant use of CM was reported by 25.9% of patients. Age was identified to be associated with the use of CM. Half of the CM-users were unaware of there being potential risks of adverse interactions between neurosurgical and CM treatments. Among the CM-users 85% would continue to receive both treatments but only 52.0% would inform neurosurgeons on their CM use. Patients' perceived lack of benefit from CM was the main reason for not using it although 47.0% indicated their willingness to try CM given better access to information. CONCLUSIONS: Informal source was the major channel of CM use amongst patients with neurosurgical conditions. A need for improved patient education and service provision was identified and should become an important consideration for healthcare systems which anticipate an increased use of CM amongst patients. Strategies to enhance doctor-patient communications in mainstream care such as pre-operative checklists for herbal medications and post-operative advice may facilitate the safe and complementary use of both treatment systems.

7.
BMC Infect Dis ; 11: 151, 2011 May 26.
Artigo em Inglês | MEDLINE | ID: mdl-21612666

RESUMO

BACKGROUND: MedSense is an electronic hand hygiene compliance monitoring system that provides Infection Control Practitioners with continuous access to hand hygiene compliance information by monitoring Moments 1 and 4 of the WHO "My 5 Moments for Hand Hygiene" guidelines. Unlike previous electronic monitoring systems, MedSense operates in open cubicles with multiple beds and does not disrupt existing workflows. METHODS: This study was conducted in a 6-bed neurosurgical intensive care unit with technical development and evaluation phases. Healthcare workers (HCWs) wore an electronic device in the style of an identity badge to detect hand hygiene opportunities and compliance. We compared the compliance determined by the system and an infection control nurse. At the same time, the system assessed compliance by time of day, day of week, work shift, professional category of HCWs, and individual subject, while the workload of HCWs was monitored by measuring the amount of time they spent in patient zones. RESULTS: During the three-month evaluation phase, the system identified 13,694 hand hygiene opportunities from 17 nurses, 3 physiotherapists, and 1 healthcare assistant, resulting in an overall compliance of 35.1% for the unit. The per-indication compliance for Moment 1, 4, and simultaneous 1 and 4 were 21.3% (95%CI: 19.0, 23.6), 39.6% (95%CI: 37.3, 41.9), and 49.2% (95%CI: 46.6, 51.8), respectively, and were all statistically significantly different (p < 0.001). In the four 20-minute sessions when hand hygiene was monitored concurrently by the system and infection control nurse, the compliance were 88.9% and 95.6% respectively (p = 0.34), and the activity indices were 11.1 and 12.9 opportunities per hour, respectively. The hours from 12:00 to 14:00 had a notably lower compliance (21.3%, 95%CI: 17.2, 25.3) than nearly three quarters of the other periods of the day (p < 0.001). Nurses who used shared badges had significantly (p < 0.01) lower compliance (23.7%, 95%CI: 17.8, 29.6) than both the registered nurses (36.1%, 95%CI: 34.2, 37.9) and nursing officers (34.0%, 95%CI: 31.1, 36.9) who used named badges. CONCLUSION: MedSense provides an unobtrusive and objective measurement of hand hygiene compliance. The information is important for staff training by the infection control team and allocation of manpower by hospital administration.


Assuntos
Eletrônica/métodos , Fidelidade a Diretrizes/organização & administração , Desinfecção das Mãos/normas , Higiene/normas , Controle de Infecções/métodos , Eletrônica/instrumentação , Eletrônica/organização & administração , Pessoal de Saúde , Humanos , Controle de Infecções/instrumentação , Controle de Infecções/organização & administração , Controle de Infecções/normas , Organização Mundial da Saúde
8.
Anticancer Res ; 30(11): 4515-24, 2010 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-21115901

RESUMO

BACKGROUND: Glioblastoma is a type of highly malignant primary brain tumour. By means of ion excretion and the associated obligatory water loss, glioma cells can change shapes and undergo extensive migration and invasion. This study investigated the effects of inhibition of ion excretion in glioma cells. MATERIALS AND METHODS: The expression of chloride channels (ClCs) and metalloproteinase-2 (MMP-2) was studied in two human glioma cell lines (STTG1 and U251-MG). The effects of ClC inhibition with chlorotoxin (a ClC-3 inhibitor), 5-nitro-2-3-phenylpropylamino benzoic acid (NPPB) (a non-specific ClC inhibitor), and ClC-3 siRNA knockdown were studied. RESULTS: Both STTG1 and U251-MG cells expressed ClC family members ClC-2, -3, -4, -5, -6 and -7, as well as MMP-2. Glioma cell invasion was markedly but not completely inhibited by ClC-3 and MMP-2 siRNA knockdown, and by chlorotoxin treatment. Addition of chlorotoxin to siRNA-treated glioma cells only slightly increased the suppression of invasion. In contrast, invasion was completely blocked by the non-specific ClC blocker NPPB. CONCLUSION: ClCs are crucial in glioma cell migration and invasion. Blockade of a single ClC, however, is not sufficient to achieve complete inhibition of glioma cell invasion, suggesting that any future therapy should be targeted at pharmacological blockade of multiple ClCs.


Assuntos
Neoplasias Encefálicas/patologia , Movimento Celular/efeitos dos fármacos , Canais de Cloreto/fisiologia , Glioma/patologia , Metaloproteinase 2 da Matriz/fisiologia , Western Blotting , Neoplasias Encefálicas/genética , Adesão Celular/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Imunofluorescência , Inativação Gênica/fisiologia , Glioma/genética , Humanos , Técnicas Imunoenzimáticas , Invasividade Neoplásica , Neurotoxinas/farmacologia , RNA Mensageiro/genética , RNA Interferente Pequeno/genética , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Venenos de Escorpião/farmacologia , Células Tumorais Cultivadas
9.
Br J Neurosurg ; 24(4): 479-81, 2010 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-20515265

RESUMO

A 31-year-old man with Moyamoya disease had received a right encephalo-duro-arterial synangiosis and later developed a rupture of the left thalamo-perforating artery aneurysm. Surgical strategies were discussed. Perfusion studies revealed increased haemodynamic stress on the left hemisphere which was likely the cause of the aneurysm.


Assuntos
Aneurisma Intracraniano/diagnóstico por imagem , Doença de Moyamoya/diagnóstico por imagem , Adulto , Revascularização Cerebral , Humanos , Aneurisma Intracraniano/cirurgia , Masculino , Doença de Moyamoya/cirurgia , Radiografia , Resultado do Tratamento
10.
BMC Cancer ; 9: 131, 2009 Apr 29.
Artigo em Inglês | MEDLINE | ID: mdl-19402900

RESUMO

BACKGROUND: Selection of patients with local failure of nasopharyngeal carcinoma (NPC) for appropriate type of salvage treatment can be difficult due to the lack of data on comparative efficacy of different salvage treatments. The purpose of the present study was to validate a previously published prognostic scoring system for local failures of NPC treated by radiosurgery based on reported results in the literature. METHODS: A literature search yielded 3 published reports on the use of radiosurgery as salvage treatment of NPC that contained sufficient clinical information for validation of the scoring system. Prognostic scores of 18 patients from these reports were calculated and actuarial survival rates were estimated and compared to the original cohort used to design the prognostic scoring system. The area under the receiver operating characteristic curve was also determined and compared between the current and original patient groups. RESULTS: The calculated prognostic scores ranged from 0.32 to 1.21, with 15 patients assigned to the poor prognostic group and 3 to the intermediate prognostic group. The actuarial 3-year survival rates in the intermediate and poor prognostic groups were 67% and 0%, respectively. These results were comparable to the observed 3-year survival rates of 74% and 23% in the intermediate and poor prognostic group in the original reports. The area under the receiver operating characteristic curve for the current patient group was 0.846 which was similar to 0.841 in the original group. CONCLUSION: The previously published prognostic scoring system demonstrated good prediction of treatment outcome after radiosurgery in a small group of NPC patients with poor prognosis. Prospective study to validate the scoring system is currently being carried out in our institution.


Assuntos
Neoplasias Nasofaríngeas/cirurgia , Radiocirurgia/métodos , Adulto , Idoso , Humanos , Pessoa de Meia-Idade , Neoplasias Nasofaríngeas/patologia , Recidiva Local de Neoplasia , Prognóstico , Reprodutibilidade dos Testes , Literatura de Revisão como Assunto , Análise de Sobrevida , Resultado do Tratamento
11.
Brain Pathol ; 19(2): 337-40, 2009 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-19291001

RESUMO

Rhabdoid tumor cells are typically observed in atypical teratoid/rhabdoid tumor (AT/RT) but may also be seen in meningioma,glioma, melanoma, rhabdomyosarcoma and metastatic carcinoma.We present an astroblastoma with unusual rhabdoid features which is rarely described in the English literature. Apart from the rhabdoid tumor cells, all the histopathological features typical for astroblastoma are present in this case. These features include pseudopapillary arrangement, astroblastic pseudorosettes, perivascular hyalinization and calcifications, absence of fibrillary background and a pushing tumor border. The tumor cells display a multilineage immunohistochemical profile. In addition, diffuse and strong membranous and cytoplasmic dot-like pattern is appreciated with epithelial membrane antigen (EMA). The diagnosis of astroblastoma is also well supported by the age of presentation, anatomical location and radiological features of the tumor.We believe that on top of the above-mentioned unusual tumors with rhabdoid cells, astroblastoma should also be considered in the list of differential diagnosis.


Assuntos
Neoplasias Encefálicas/patologia , Lobo Frontal , Neoplasias Neuroepiteliomatosas/patologia , Adulto , Neoplasias Encefálicas/diagnóstico , China , Feminino , Lobo Frontal/patologia , Humanos , Neoplasias Neuroepiteliomatosas/diagnóstico
12.
Alzheimers Dement ; 5(1): 30-42, 2009 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-19118807

RESUMO

BACKGROUND: This study examined how physician contacts and hospitalizations vary in relation to cognitive function level among community-residing older adults. METHODS: Analysis of the 1998 wave of the Health and Retirement Survey (HRS) was conducted to create three levels of cognitive function among 6,991 older adults by using direct measures for self-respondents and proxy evaluations. Ordinary least square regression analyses were used to estimate the probability of physician outpatient contacts, number of hospitalizations, and nights hospitalized during the last 2 years. RESULTS: Lower cognitive function level was found to be associated with decreasing levels of physician contacts and increasing levels of hospitalizations as well as nights hospitalized. In addition, lower cognitive function levels were consistently related to a variety of comorbidities. Moreover, many older adults with low cognitive function levels reported or were reported by their proxies as not having a diagnosis of a memory-related disease (MRD). Finally, having a diagnosis of an MRD was found to be associated with more physician contacts but fewer hospital nights compared with those who had never received such a diagnosis. CONCLUSIONS: The findings suggest the need for increased outreach targeted at identification of community-dwelling older adults with decline in cognitive function who are in need of care but are underdiagnosed, underutilize physician care, and are overhospitalized.


Assuntos
Assistência Ambulatorial/estatística & dados numéricos , Transtornos Cognitivos/epidemiologia , Transtornos Cognitivos/terapia , Relações Comunidade-Instituição , Hospitalização/estatística & dados numéricos , Médicos/estatística & dados numéricos , Idoso , Idoso de 80 Anos ou mais , Doença de Alzheimer/epidemiologia , Doença de Alzheimer/terapia , Comorbidade , Feminino , Habitação para Idosos , Humanos , Masculino , Transtornos da Memória/epidemiologia , Transtornos da Memória/terapia , Prevalência , Índice de Gravidade de Doença
13.
Surg Neurol ; 68(4): 466-70; discussion 470, 2007 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-17905078

RESUMO

BACKGROUND: Radiotherapy is an effective treatment for NPC. With improved survival, radiation-induced neurological complications are being diagnosed more commonly. We presented a patient with a trilogy of radiation-induced pathologies after radiotherapy for NPC. The diagnostic and surgical implications are discussed. CASE DESCRIPTION: A 57-year-old man, previously irradiated for NPC, presented with mental confusion and was found to have radiation-induced carotid stenosis and bitemporal lobe necrosis on MR imaging. His condition deteriorated suddenly a year later, and a gliosarcoma was found to have developed within the area of right temporal lobe necrosis. Tumor removal was complicated by injury to the MCA branches, causing basal ganglion infarction. This was likely because of a combination of technical error and arterial insufficiency secondary to radiation-induced arterial stenosis. CONCLUSIONS: In patients with known temporal lobe radiation-induced necrosis, alternative diagnosis such as gliosarcoma should be considered when there is sudden clinical deterioration. Radiation-induced carotid stenosis may reduce the safety margin during surgery. Preoperative carotid screening may be indicated.


Assuntos
Neoplasias Nasofaríngeas/complicações , Neoplasias Nasofaríngeas/radioterapia , Doenças do Sistema Nervoso/etiologia , Doenças do Sistema Nervoso/cirurgia , Procedimentos Neurocirúrgicos , Radioterapia/efeitos adversos , Neoplasias Encefálicas/patologia , Neoplasias Encefálicas/cirurgia , Estenose das Carótidas/etiologia , Estenose das Carótidas/cirurgia , Confusão/etiologia , Gliossarcoma/patologia , Gliossarcoma/cirurgia , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Necrose , Neoplasias Induzidas por Radiação/cirurgia , Doenças do Sistema Nervoso/psicologia , Stents , Lobo Temporal/patologia , Lobo Temporal/cirurgia
14.
Int J Radiat Oncol Biol Phys ; 69(2): 469-74, 2007 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-17869663

RESUMO

BACKGROUND: Limited local failure of nasopharyngeal carcinoma (NPC) can often be salvaged by reirradiation using different techniques. Both gold grain implantation (GGI) and stereotactic radiosurgery (SRS) have been used as salvage treatment of NPC but the relative efficacy of these two treatments is not known. METHODS AND MATERIALS: A total of 74 patients with local NPC failure were included in this retrospective analysis. Of these patients, 37 underwent SRS (median dose, 12.5 Gy) and 37 split-palatal GGI at a dose of 60 Gy. The two groups were individually matched for prognostic factors, except for tumor volume. The median follow-up was 42 months. RESULTS: Local control was better in the GGI group. The 3-year local failure-free rate was 77.9% for the GGI group compared with 68.3% for the SRS group. However, the difference was not statistically significant (p = 0.098). In the subgroup with a tumor volume of

Assuntos
Radioisótopos de Ouro/uso terapêutico , Neoplasias Nasofaríngeas/radioterapia , Neoplasias Nasofaríngeas/cirurgia , Radiocirurgia/métodos , Terapia de Salvação/métodos , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Feminino , Radioisótopos de Ouro/efeitos adversos , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias Nasofaríngeas/mortalidade , Neoplasias Nasofaríngeas/patologia , Recidiva Local de Neoplasia/radioterapia , Recidiva Local de Neoplasia/cirurgia , Radiocirurgia/efeitos adversos , Carga Tumoral
15.
Int J Radiat Oncol Biol Phys ; 66(5): 1415-21, 2006 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-17056191

RESUMO

BACKGROUND: Stereotactic radiosurgery has been employed as a salvage treatment of local failures of nasopharyngeal carcinoma (NPC). To identify patients that would benefit from radiosurgery, we reviewed our data with emphasis on factors that predicted treatment outcome. PATIENTS AND METHODS: A total of 48 patients with local failures of NPC were treated by stereotactic radiosurgery between March 1996 and February 2005. Radiosurgery was administered using a modified linear accelerator with single or multiple isocenters to deliver a median dose of 12.5 Gy to the target periphery. Median follow-up was 54 months. RESULTS: Five-year local failure-free probability after radiosurgery was 47.2% and 5-year overall survival rate was 46.9%. Neuroendocrine complications occurred in 27% of patients but there were no treatment-related deaths. Time interval from primary radiotherapy, retreatment T stage, prior local failures and tumor volume were significant predictive factors of local control and/or survival whereas age was of marginal significance in predicting survival. A radiosurgery prognostic scoring system was designed based on these predictive factors. Five-year local failure-free probabilities in patients with good, intermediate and poor prognostic scores were 100%, 42.5%, and 9.6%. The corresponding five-year overall survival rates were 100%, 51.1%, and 0%. CONCLUSION: Important factors that predicted tumor control and survival after radiosurgery were identified. Patients with good prognostic score should be treated by radiosurgery in view of the excellent results. Patients with intermediate prognostic score may also be treated by radiosurgery but those with poor prognostic score should receive other salvage treatments.


Assuntos
Neoplasias Nasofaríngeas/cirurgia , Radiocirurgia , Terapia de Salvação/métodos , Adulto , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias Nasofaríngeas/mortalidade , Radiocirurgia/efeitos adversos , Dosagem Radioterapêutica , Indução de Remissão , Estudos Retrospectivos , Taxa de Sobrevida
17.
Head Neck ; 27(6): 488-93, 2005 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-15880390

RESUMO

BACKGROUND: Cranionasal resection was first described in 1997 for the surgical resection of olfactory neuroblastoma. The endoscopic transnasal approach is used in cranionasal resection to replace the more invasive craniofacial resection. It has the advantages of avoiding the facial wound and its associated pain, swelling, and scar. The authors have routinely practiced cranionasal resection since 1996 for resection of all anterior skull base tumors in which the resultant skull base bony defect is limited to the nasal and sinus roof. The aim of this study was to review the results of cranionasal resection for olfactory neuroblastoma. METHODS: The results of cranionasal resection for olfactory neuroblastoma in six patients from 1996 to 2003 were reviewed. RESULTS: The Kadesh stages were 3A, 2B, and 1C. None of the patients had postoperative complications. Postoperative radiotherapy was given only to the patient with Kadesh stage C disease. There were no local recurrences. Two patients died of lung metastasis. CONCLUSIONS: Cranionasal resection is a safe and adequate procedure. Postoperative radiotherapy is not necessary after clear resection of Kadesh A and B tumors.


Assuntos
Endoscopia , Estesioneuroblastoma Olfatório/cirurgia , Cavidade Nasal , Neoplasias Nasais/cirurgia , Adulto , Idoso , Estesioneuroblastoma Olfatório/diagnóstico por imagem , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias Nasais/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Resultado do Tratamento
18.
Int J Radiat Oncol Biol Phys ; 56(1): 177-83, 2003 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-12694836

RESUMO

PURPOSE: To evaluate the efficacy and complication of linear accelerator-based stereotactic radiosurgery (SRS) when used as salvage treatment for early-stage persistent and recurrent nasopharyngeal carcinoma (NPC) after primary radiotherapy (RT). MATERIALS AND METHODS: Between March 1998 and June 2001, 18 patients (15 men and 3 women; median age 46 years, range 32-84) with locally persistent or recurrent NPC confined to the nasopharynx (rT1) or with limited extension to the nasal fossa or parapharyngeal space (rT2) were treated by SRS. Thirteen patients had rT1 disease and 5 had rT2 disease. Most patients had disease not amenable to surgery or brachytherapy. All patients had undergone previous radical RT. Persistent disease was defined as tumor relapse within 4 months of completion of primary RT, and recurrence as tumor relapse beyond 4 months. Seven patients were treated for persistent disease, eight for a first recurrence, and three for a second recurrence. SRS was performed using multiple noncoplanar arcs of photons delivered to the target volume, which was defined by axial CT at a 3 mm thickness, supplemented by MRI in selected patients (67%). The median target volume was 5.3 cm(3) (range 2.2-16.9). The median SRS dose was 12.5 Gy (range 11-14) delivered to the 80% isodose line. All patients underwent serial nasopharyngoscopy and imaging after SRS. The median follow-up was 26 months (range 11-48). RESULTS: After SRS, 16 (89%) of 18 patients had complete regression of tumor as assessed by nasopharyngoscopy and biopsy. Four patients with an initial complete response to SRS subsequently developed local relapse again, with one recurrence developing outside the target volume 8 months after SRS and three within the target volume at 6-26 months after SRS. Two patients with local disease controlled by SRS developed relapse in other sites (neck node and liver metastases). The actuarial 2-year local control rate after SRS was 72%. Patients treated for persistent disease had a better local control rate (100%; 7 of 7) than those treated for recurrent disease (46%; 5 of 11). Patients with rT1 disease also had a better outcome after SRS compared with those with rT2 disease, with a control rate of 77% (10 of 13) for rT1 disease and 40% (2 of 5) for rT2 disease. Treatments were well tolerated, with no acute side effects. One patient had radiologic evidence of temporal lobe necrosis, although the right temporal lobe had already received a high dose during prior RT. That patient also developed additional local recurrence and liver metastases and died. The actuarial 2-year survival rate was 86%. CONCLUSIONS: Our preliminary results indicate that SRS is an effective treatment modality for persistent and recurrent early-stage NPC, with early control rates comparable to other salvage treatments such as brachytherapy and nasopharyngectomy. A modest SRS dose at 12.5 Gy also appears to be effective and is associated with minimal morbidities. More clinical experience and longer follow-up are needed to validate our results and to address fully the role of SRS in salvaging local failures of NPC.


Assuntos
Carcinoma/cirurgia , Neoplasias Nasofaríngeas/cirurgia , Radiocirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Carcinoma/tratamento farmacológico , Carcinoma/mortalidade , Carcinoma/patologia , Quimioterapia Adjuvante , Terapia Combinada , Feminino , Fluoruracila/administração & dosagem , Seguimentos , Humanos , Tábuas de Vida , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Neoplasias Nasofaríngeas/tratamento farmacológico , Neoplasias Nasofaríngeas/mortalidade , Neoplasias Nasofaríngeas/patologia , Recidiva Local de Neoplasia , Compostos Organoplatínicos/administração & dosagem , Aceleradores de Partículas , Complicações Pós-Operatórias/etiologia , Lesões por Radiação/etiologia , Radiocirurgia/efeitos adversos , Terapia de Salvação , Análise de Sobrevida , Taxa de Sobrevida , Tomografia Computadorizada por Raios X , Resultado do Tratamento
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