Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 31
Filtrar
Mais filtros

Base de dados
País/Região como assunto
Tipo de documento
País de afiliação
Intervalo de ano de publicação
1.
Ann Oncol ; 24(1): 215-9, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-22887467

RESUMO

BACKGROUND: Despite the association with more advanced nodal stage, patients with human papillomavirus (HPV) positive oropharyngeal cancers have better outcomes. We examined whether the HPV can modify the effect of known prognostic factors in tonsillar cancer. PATIENTS AND METHODS: A total of 489 patients from 10 centres were followed up for recurrence or death for a median of 3.2 years. Determinants of the rate of locoregional recurrence, death from tonsillar cancer and overall survival were modelled using Cox regression. RESULTS: The prognostic value of T and N stages were modified by HPV as indicated by statistically significant interaction terms. After adjusting for age, gender and treatment, T stage appeared relevant only for HPV-positive cancers (where a higher T stage was associated with worse outcomes). There was some evidence that N stage was a more relevant prognostic factor for HPV-negative than -positive cancers. There was no evidence that the HPV modifies the effect of age, gender or grade on outcomes. CONCLUSIONS: This study suggests that the prognostic significance of the conventional staging system in tonsillar cancer is modified by HPV.


Assuntos
Papillomaviridae/fisiologia , Neoplasias Tonsilares/patologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Papillomaviridae/isolamento & purificação , Prognóstico , Neoplasias Tonsilares/virologia
2.
Clin Oncol (R Coll Radiol) ; 21(1): 8-13, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19019641

RESUMO

AIMS: Optic nerve sheath meningiomas typically present with unilateral visual deterioration. Here, a single centre's experience with radiotherapy aimed at local control and visual stabilisation is presented. MATERIALS AND METHODS: The meningioma database within the Radiation Oncology Department, Prince of Wales Hospital was audited for patients whose meningiomas took origin from the optic nerve sheath. Excluded from this evaluation was any patient whose meningioma secondarily involved the optic nerve. Where vision was not a consideration, treatment was given by stereotactic radiosurgery for patients with retained vision. The remaining patients were treated by fractionated radiotherapy, predominately via a stereotactic approach. The main end points were: lack of radiological progression of the tumour and maintenance of preradiotherapy vision. RESULTS: There were 15 eligible patients, one patient with neurofibromatosis had bilateral optic nerve involvement; thus, 16 optic nerves were treated. Women (10) outnumbered men (five) and the age range was 7-74 years. One patient progressed outside the volume treated (for a geographical failure) with no infield progression. This patient became blind, was re-treated by stereotactic radiosurgery, had tumour control and vision improved. Thus, for 17 optic nerves (or part thereof) treated, all patients ultimately had local control (100%) with worsening of vision only occurring in one patient. No other late morbidity was present for any patient. CONCLUSION: Optic nerve sheath meningiomas have high local control rates and preservation of vision with radiotherapy.


Assuntos
Meningioma/radioterapia , Neoplasias do Nervo Óptico/radioterapia , Adolescente , Adulto , Idoso , Cegueira/etiologia , Criança , Feminino , Humanos , Masculino , Meningioma/complicações , Meningioma/cirurgia , Pessoa de Meia-Idade , Neoplasias do Nervo Óptico/complicações , Neoplasias do Nervo Óptico/cirurgia , Radiocirurgia , Dosagem Radioterapêutica , Adulto Jovem
3.
Clin Oncol (R Coll Radiol) ; 21(4): 315-9, 2009 May.
Artigo em Inglês | MEDLINE | ID: mdl-19233627

RESUMO

AIMS: Larynx cancer is the most common form of head and neck squamous cell carcinoma (HNSCC). Radiotherapy is a major treatment modality and is implicated in the possible formation of second primary tumours (SPT). The aims of this retrospective study were to establish the incidence of SPTs and their correlation with previous radiotherapy and to establish overall survival and the SPT diagnostic time lag from the index tumour according to subtype as well as radiotherapy status. MATERIALS AND METHODS: In a retrospective study of 987 patients with larynx SCCs (1967-2004) associations between radiotherapy, diagnosis of SPTs, median SPT diagnostic time lag, disease-free survival and overall survival were analysed. RESULTS: In total, 184 (18.6%) patients developed metachronous SPTs with an overall survival of 93.0 (standard error 6.8 months). One hundred and seventy (92.4%) underwent radiotherapy, whereas 14 (7.6%) patients were not exposed to radiotherapy. No significant increased incidence of SPT was shown in the radiotherapy group. A statistically non-significant increase in SPT diagnostic time lag trend was noted for both HNSCC SPTs (radiotherapy vs non-radiotherapy; 76.0 [standard error 6.7] vs 50.0 [standard error 23.0]) and lung SPTs (45.0 [standard error 12.1] vs 24.0 [standard error 4.9]) months. CONCLUSION: This study suggests that radiotherapy is not a risk for SPT induction; it may, however, neutralise a proportion of cancerised fields in the lung and head and neck areas without any significant benefit on overall survival.


Assuntos
Carcinoma de Células Escamosas/radioterapia , Neoplasias Laríngeas/radioterapia , Segunda Neoplasia Primária/diagnóstico , Idoso , Austrália/epidemiologia , Carcinoma de Células Escamosas/tratamento farmacológico , Carcinoma de Células Escamosas/mortalidade , Carcinoma de Células Escamosas/cirurgia , Progressão da Doença , Humanos , Neoplasias Laríngeas/tratamento farmacológico , Neoplasias Laríngeas/mortalidade , Neoplasias Laríngeas/cirurgia , Pessoa de Meia-Idade , Análise Multivariada , Segunda Neoplasia Primária/epidemiologia , Segunda Neoplasia Primária/etiologia , Estudos Retrospectivos , Medição de Risco , Análise de Sobrevida
4.
J Clin Neurosci ; 16(7): 945-9, 2009 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-19342244

RESUMO

The vascular structure of cavernous malformations (CMs) and arteriovenous malformations (AVMs) is different and they have differing clinical responses to radiosurgery. The structural differences of irradiated and non-irradiated CMs and AVMs were examined to clarify their differential responses to radiosurgery. CMs showed a greater ratio of intraluminal diameter to vessel wall thickness and a lack of subendothelial fibroblasts, myofibroblasts and smooth muscle cells compared with AVMs. Partial proteinaceous clots (19-22% of lumen) formed in CM sinusoids after radiosurgery but complete vaso-occlusion did not occur for up to 6 years after radiosurgery. In contrast, complete vaso-occlusion (91-98% of lumen) by fibrin thrombi that are permanent clots was observed in AVM vessels. Radiation-induced neuronal loss, neurofibrillary degeneration of neurons and myelin fragmentation were typical in the surrounding brain tissue of the irradiated lesions. The different structure and cellular composition of CMs and AVMs is likely to influence their responses to radiosurgery.


Assuntos
Malformações Arteriovenosas/patologia , Malformações Arteriovenosas/cirurgia , Neoplasias Encefálicas/cirurgia , Hemangioma Cavernoso do Sistema Nervoso Central/cirurgia , Radiocirurgia/efeitos adversos , Malformações Arteriovenosas/ultraestrutura , Neoplasias Encefálicas/patologia , Neoplasias Encefálicas/ultraestrutura , Relação Dose-Resposta à Radiação , Hemangioma Cavernoso do Sistema Nervoso Central/patologia , Hemangioma Cavernoso do Sistema Nervoso Central/ultraestrutura , Humanos , Estudos Longitudinais , Microscopia Eletrônica de Transmissão/métodos , Músculo Liso Vascular/patologia , Músculo Liso Vascular/cirurgia , Músculo Liso Vascular/ultraestrutura
5.
Clin Oncol (R Coll Radiol) ; 20(10): 751-6, 2008 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-18849154

RESUMO

AIMS: To evaluate a single centre's experience with subglottic laryngeal carcinoma. MATERIALS AND METHODS: The laryngeal cancer database at the Prince of Wales Hospital was sourced to define a sub-population of patients presenting with primary subglottic carcinoma. Excluded from the analysis were patients having a glottic origin for their carcinoma and secondarily involving the subglottis. RESULTS: Of 969 patients with newly diagnosed laryngeal cancer, 10 (1%) had subglottic origin. T stage was six T2 and four T3, all were N0. A total laryngectomy was carried out in five patients, four of whom had postoperative radiotherapy, a hemilaryngectomy in one patient and definitive radiotherapy in four patients. There was only one local failure, who could not be salvaged, and one patient died locally controlled with metastatic disease. Thus, local control was achieved in nine of 10 patients. CONCLUSION: Although an infrequent sub-population, subglottic carcinoma has a high likelihood of being locally controlled.


Assuntos
Carcinoma de Células Escamosas/patologia , Carcinoma de Células Escamosas/terapia , Neoplasias Laríngeas/patologia , Neoplasias Laríngeas/terapia , Idoso , Idoso de 80 Anos ou mais , Austrália , Feminino , Glote/patologia , Humanos , Laringectomia , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Radioterapia Adjuvante , Resultado do Tratamento
6.
J Laryngol Otol ; 132(7): 642-650, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29961434

RESUMO

OBJECTIVES: To assess five-year local control and ultimate local control rates of patients treated for locally advanced T3-4 glottic carcinoma with surgery only, radiotherapy only, or surgery plus radiotherapy. Cancer-specific survival, overall survival and rates of malignancy development were also assessed. METHODS: A retrospective review was conducted on patients from 1967 to 2015, with analysis of local control, ultimate local control, overall survival and cancer-specific survival performed using Kaplan-Meier and Cox regression. RESULTS: Of 169 eligible patients, the majority (59 per cent) were treated with surgery plus radiotherapy, with laryngectomy being the most common surgical procedure. Local control and ultimate local control rates were higher with surgery only (94.1 per cent) and surgery plus radiotherapy (87.9 and 86.8 per cent respectively), compared to radiotherapy only (46.8 and 52.4 per cent) (both p < 0.001). Cancer-specific survival, overall survival and malignancy development did not differ between groups. CONCLUSION: Surgery, with or without radiotherapy, offers significantly higher five-year local control and ultimate local control for patients with advanced glottic carcinoma, compared to radiotherapy only.


Assuntos
Carcinoma/mortalidade , Neoplasias Laríngeas/mortalidade , Laringectomia/mortalidade , Radioterapia/mortalidade , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma/patologia , Carcinoma/terapia , Terapia Combinada , Feminino , Glote/patologia , Humanos , Estimativa de Kaplan-Meier , Neoplasias Laríngeas/patologia , Neoplasias Laríngeas/terapia , Laringectomia/métodos , Masculino , Pessoa de Meia-Idade , Modelos de Riscos Proporcionais , Análise de Regressão , Estudos Retrospectivos , Taxa de Sobrevida , Resultado do Tratamento
7.
Cochrane Database Syst Rev ; (4): CD005007, 2005 Oct 19.
Artigo em Inglês | MEDLINE | ID: mdl-16235387

RESUMO

BACKGROUND: Cancer is common and radiotherapy is one well-established treatment for some solid tumours. HBO may improve the ability of radiotherapy to kill hypoxic cancer cells, so the administration of radiotherapy while breathing HBO may result in a reduction in mortality and tumour recurrence. OBJECTIVES: To assess the benefits and harms of radiotherapy while breathing HBO. SEARCH STRATEGY: In November 2004 we searched The Cochrane Central Register of Controlled Trials (CENTRAL), (The Cochrane Library Issue 3), MEDLINE, EMBASE , CINAHL, DORCTHIM and reference lists of articles. Relevant journals were handsearched. SELECTION CRITERIA: Randomised and quasi-randomised studies comparing the outcome of malignant tumours following radiation therapy while breathing HBO versus air (with or without sham therapy). DATA COLLECTION AND ANALYSIS: Three reviewers independently evaluated the quality of the relevant trials using the method of Schulz (Schulz 1995) and extracted the data from the included trials. MAIN RESULTS: Nineteen trials contributed to this review (2286 patients: 1103 allocated to HBO and 1153 control). With HBO, there was a reduction in mortality for head and neck cancers at both one year and five years after therapy (Relative risk (RR) 0.83, P = 0.03, number needed to treat (NNT) = 11 and RR 0.82, P = 0.03, NNT = 5 respectively), as well as improved local tumour control at three months (RR with HBOT 0.58, P = 0.006, NNT = 7). The effect of HBO varied with different fractionation schemes. Local tumour recurrence was less likely with HBO at one year (head and neck, RR 0.66, P < 0.0001, NNT = 5), two years (uterine cervix RR 0.60, P = 0.04, NNT = 5) and five years (head and neck (RR 0.77, P = 0.01). Any advantage is achieved at the cost of some adverse effects. There was a significant increase in the rate of both severe radiation tissue injury (RR 2.35, P < 0.0001, (number needed to harm (NNH) = 8) and the chance of seizures during therapy (RR 6.76, P = 0.03, NNH 22) with HBO. AUTHORS' CONCLUSIONS: There is some evidence that HBO improves local tumour control and mortality for cancers of the head and neck, and local tumour recurrence in cancers of the head and neck, and uterine cervix. These benefits may only occur with unusual fractionation schemes. HBO is associated with significant adverse effects including oxygen toxic seizures and severe tissue radiation injury. The methodological and reporting inadequacies of the primary studies included in this review demand a cautious interpretation. More research is needed for head and neck cancer, but is probably not justified for bladder cancer. There is little evidence available concerning malignancies at other anatomical sites on which to base a recommendation.


Assuntos
Oxigenoterapia Hiperbárica , Neoplasias/radioterapia , Terapia Combinada , Humanos , Recidiva Local de Neoplasia/epidemiologia , Neoplasias/mortalidade , Ensaios Clínicos Controlados Aleatórios como Assunto , Fatores de Tempo
8.
Cochrane Database Syst Rev ; (3): CD005005, 2005 Jul 20.
Artigo em Inglês | MEDLINE | ID: mdl-16034961

RESUMO

BACKGROUND: Cancer is a significant global health problem. Radiotherapy is a treatment for many cancers and about 50% of patients having radiotherapy with be long-term survivors. Some will experience LRTI developing months or years later. HBOT has been suggested for LRTI based upon the ability to improve the blood supply to these tissues. It is postulated that HBOT may result in both healing of tissues and the prevention of problems following surgery. OBJECTIVES: To assess the benefits and harms of HBOT for treating or preventing LRTI. SEARCH STRATEGY: We searched The Cochrane Central Register of Controlled Trials (CENTRAL) Issue 3, 2004, MEDLINE, EMBASE, CINAHL and DORCTHIM (hyperbaric RCT register) in September 2004. SELECTION CRITERIA: Randomised controlled trials (RCTs) comparing the effect of HBOT versus no HBOT on LRTI prevention or healing. DATA COLLECTION AND ANALYSIS: Three reviewers independently evaluated the quality of the relevant trials using the guidelines of the Cochrane Handbook Clarke 2003) and extracted the data from the included trials. MAIN RESULTS: Six trials contributed to this review (447 participants). For pooled analyses, investigation of heterogeneity suggested important variability between trials. From single studies there was a significantly improved chance of healing following HBOT for radiation proctitis (relative risk (RR) 2.7, 95% confidence Interval (CI) 1.2 to 6.0, P = 0.02, numbers needed to treat (NNT) = 3), and following both surgical flaps (RR 8.7, 95% CI 2.7 to 27.5, P = 0.0002, NNT = 4) and hemimandibulectomy (RR 1.4, 95% CI 1.1 to 1.8, P = 0.001, NNT = 5). There was also a significantly improved probability of healing irradiated tooth sockets following dental extraction (RR 1.4, 95% CI 1.1 to 1.7, P = 0.009, NNT = 4). There was no evidence of benefit in clinical outcomes with established radiation injury to neural tissue, and no data reported on the use of HBOT to treat other manifestations of LRTI. These trials did not report adverse effects. AUTHORS' CONCLUSIONS: These small trials suggest that for people with LRTI affecting tissues of the head, neck, anus and rectum, HBOT is associated with improved outcome. HBOT also appears to reduce the chance of osteoradionecrosis following tooth extraction in an irradiated field. There was no such evidence of any important clinical effect on neurological tissues. The application of HBOT to selected patients and tissues may be justified. Further research is required to establish the optimum patient selection and timing of any therapy. An economic evaluation should be also be undertaken. There is no useful information from this review regarding the efficacy or effectiveness of HBOT for other tissues.


Assuntos
Oxigenoterapia Hiperbárica , Lesões por Radiação/terapia , Humanos , Neoplasias/radioterapia , Osteorradionecrose/prevenção & controle , Lesões por Radiação/prevenção & controle , Ensaios Clínicos Controlados Aleatórios como Assunto
9.
Int J Radiat Oncol Biol Phys ; 32(4): 1007-16, 1995 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-7607920

RESUMO

PURPOSE: The poor prognosis of elderly patients in many cancers may be due to less thorough investigation and less aggressive treatment because of the perception that radical treatment will be poorly tolerated and that elderly patients have a limited life expectancy. We wished to assess whether older age is associated with (a) less radical treatment, (b) poorer outcome, or (c) greater toxicity, after adjusting for other possible contributing factors. METHODS AND MATERIALS: A retrospective study of patients with loco-regional oropharyngeal cancer treated between January 1980 and December 1985 was conducted. Patients were treated with radiotherapy, surgery, chemotherapy, or combinations. Cox regression was used to assess age effects while allowing for the influence of other factors. RESULTS: Eighty-eight patients were treated radically and 16 palliatively. Treatment intent (radical or palliative) did not appear to be related to age, before (p = 0.42) or after adjusting for other factors (p = 0.34). In a selected group of 86 radically treated patients ages ranged from 33 to 85 (median 60). There were 35 loco-regional failures and 58 deaths (38 related to oropharyngeal cancer). Older patients were prescribed and received lower doses of radiation. However, older age was not related to the risk of loco-regional recurrence (p = 0.96) or shorter survival (p = 0.67), and was not associated with duration of treatment interruption or severity of toxicity after adjustment for prognostic factors. There was some suggestion of a higher risk of recurrence with increasing age for patients under 70 years but with a risk for patients over 70 at least equal to that of the youngest group. Elderly patients in our study may have been a selected group. CONCLUSION: Older patients with loco-regional oropharyngeal cancer, or at least a subset of them, appear to be able to tolerate radical courses of radiotherapy, and to have similar outcomes as do younger patients.


Assuntos
Neoplasias Orofaríngeas/radioterapia , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Terapia Combinada , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Neoplasias Orofaríngeas/mortalidade , Neoplasias Orofaríngeas/patologia , Neoplasias Orofaríngeas/terapia , Estudos Retrospectivos , Análise de Sobrevida , Falha de Tratamento , Resultado do Tratamento
10.
Int J Radiat Oncol Biol Phys ; 32(3): 763-8, 1995 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-7790263

RESUMO

PURPOSE: To retrospectively assess a protocol of split-course accelerated radiation therapy (SCAT) for selected head and neck cancers. METHODS AND MATERIALS: SCAT consisted of 1.8 Gy per fraction administered twice daily with a minimum gap between fractions of 6 h. The treatment protocol prescribed an initial 16 fractions followed by a planned 5 to 12 day break, and then a further 20 to 22 fractions for a total dose ranging from 64.8 to 72 Gy delivered in 5 to 6 weeks. RESULTS: Twenty-eight patients received SCAT for histologically confirmed head and neck cancer between January 1987 and August 1991. All patients were followed up until December 1, 1993. The mean potential follow-up time was 4.2 years (range: 2.9-6.2 years). All patients completed the treatment protocol. Thirteen tumors were laryngeal in origin, eight hypopharyngeal, four paranasal sinus, and three oropharyngeal. There were no Stage I, three Stage II, nine Stage III, and 12 Stage IV tumors. Four tumors were not staged (two paranasal sinus cancers and two surgical recurrences). Early and late toxicities were moderate to severe. Confluent mucositis was experienced by 27 of the 28 patients (96%). One patient required a prolonged midtreatment break of 24 days. Nine patients (32%) required narcotic analgesia for pain relief. Eleven patients (39%) required hospitalization for nasogastric feeding or pain control. The median length of hospital stay was 14 days (range 7-98 days). The actuarial rate of severe late toxicity at 3 years was 47% (standard error (SE) = 13%). A complete tumor response was achieved in 86% of patients. The actuarial local control rate at 3 years was 43% (SE = 11%) and the actuarial survival rate at 3 years was 25% (SE = 8%). CONCLUSION: Given the encouraging complete response rate and local control for such advanced tumors, SCAT for locoregionally advanced tumors merits further investigation. However, because of the significant late toxicity observed, the total dose, interfraction interval, and fractionation technique used should be reconsidered.


Assuntos
Carcinoma de Células Escamosas/radioterapia , Neoplasias de Cabeça e Pescoço/radioterapia , Estomatite/etiologia , Análise Atuarial , Adulto , Idoso , Carcinoma de Células Escamosas/mortalidade , Carcinoma de Células Escamosas/patologia , Feminino , Seguimentos , Neoplasias de Cabeça e Pescoço/mortalidade , Neoplasias de Cabeça e Pescoço/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Dosagem Radioterapêutica , Estudos Retrospectivos
11.
Radiother Oncol ; 44(2): 137-41, 1997 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-9288841

RESUMO

AIM: To determine the impact of waiting for radiotherapy on local control in early larynx cancer treated by radiotherapy alone. METHODS: Records of patients with T1 and T2, N0-2 larynx cancer were examined at three radiotherapy centres. Waiting time was defined in three ways, (1) time from biopsy to radiotherapy, (2) time from presentation to radiation department to start of radiotherapy and (3) the minimum of (1) and (2). Time to relapse was the major end point. RESULTS: There were 581 patients with a median follow-up of 6.8 years. Stage distribution was as follows: T1, 370; T2a, 106; T2b, 94; T2 unspecified, 11; N0, 563; N+, 18. Median times from biopsy, presentation and minimum time to treatment were 24, 16 and 15 days, respectively. Ninety percent of minimum waiting times were < or = 31 days. The median dose was 61 Gy in a median of 30 fractions over a median 46 days. Local recurrence occurred in 126 patients. The actuarial recurrence free rate at 5 years was 77% (SE 2%). In a multivariate analysis the significant predictors of relapse were higher T stage, longer treatment duration and increasing field area. Waiting time was not significantly associated with local relapse. CONCLUSION: This study did not show longer waiting time to be a significant predictor of relapse in early larynx cancer. Other end-points which are relevant, such as quality of life, have not been examined. Longer treatment times were significantly associated with relapse.


Assuntos
Neoplasias Laríngeas/radioterapia , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia , Fatores de Tempo
12.
ANZ J Surg ; 72(2): 114-20, 2002 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-12074062

RESUMO

BACKGROUND: Malignancies of the external auditory canal and temporal bone are uncommon. A retrospective review was conducted of a large series treated at the Prince of Wales hospital between 1974 and 1995. METHODS: Retrospective review of 59 cases of ear canal and temporal bone malignancies. These were analysed according to histopathology, disease extent, surgery, margin status and survival. A TNM-type staging system was applied to 51 cases and Kaplan-Meier survival analysis applied to this group. RESULTS: The 5-year cancer-specific survival (CSS) for the series was 54%. For stages 1, 2, 3 and 4 disease, the CSS were 90, 45, 40 and 19%, respectively. Survival was significantly higher where clear surgical margins were achieved (80 vs 35%). CONCLUSIONS: Carcinoma of the external ear canal is rare and, in Australia, is often related to recurrence of periauricular cutaneous malignancy. Surgical extirpation with clear margins provides the best survival.


Assuntos
Carcinoma/patologia , Carcinoma/cirurgia , Meato Acústico Externo/patologia , Meato Acústico Externo/cirurgia , Neoplasias da Orelha/patologia , Neoplasias da Orelha/cirurgia , Neoplasias Cranianas/patologia , Neoplasias Cranianas/cirurgia , Osso Temporal/patologia , Osso Temporal/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Austrália , Carcinoma/mortalidade , Neoplasias da Orelha/mortalidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Estudos Retrospectivos , Neoplasias Cranianas/mortalidade , Análise de Sobrevida
13.
J Clin Neurosci ; 21(1): 100-6, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24074805

RESUMO

Cushing's disease is hypercortisolaemia secondary to an adrenocorticotrophic hormone secreting pituitary adenoma. Primary management is almost always surgical, with limited effective medical interventions available. Adjuvant therapy in the form of radiation is gaining popularity, with the bulk of the literature related to the Gamma Knife. We present the results from our own institution using the linear accelerator (LINAC) since 1990. Thirty-six patients who underwent stereotactic radiosurgery (SRS), one patient who underwent fractionated stereotactic radiotherapy (FSRT) and for the purposes of comparison, 13 patients who had undergone conventional radiotherapy prior to 1990, were included in the analysis. Serum cortisol levels improved in nine of 36 (25%) SRS patients and 24 hour urinary free cortisol levels improved in 13 of 36 patients (36.1%). Tumour volume control was excellent in the SRS group with deterioration in only one patient (3%). The patient who underwent FSRT had a highly aggressive tumour refractory to radiation.


Assuntos
Adenoma Hipofisário Secretor de ACT/cirurgia , Adenoma/cirurgia , Hipersecreção Hipofisária de ACTH/cirurgia , Radiocirurgia/métodos , Adenoma Hipofisário Secretor de ACT/complicações , Adenoma Hipofisário Secretor de ACT/mortalidade , Adenoma/complicações , Adenoma/mortalidade , Adulto , Idoso , Intervalo Livre de Doença , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Aceleradores de Partículas , Hipersecreção Hipofisária de ACTH/etiologia , Hipersecreção Hipofisária de ACTH/mortalidade , Resultado do Tratamento , Adulto Jovem
14.
J Laryngol Otol ; 128 Suppl 2: S16-26, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24351880

RESUMO

INTRODUCTION: The main purpose of this study was to investigate the psychological and functional impact attributed to acoustic neuroma symptoms. MATERIALS AND METHODS: A sample of 207 acoustic neuroma patients completed a study-specific questionnaire about the severity, frequency, and psychological and functional impact of 9 acoustic neuroma symptoms. RESULTS: The survey response rate was 56.4 per cent. All symptoms had some degree of psychological impact for the majority of participants; hearing loss was the symptom most often reported to have a severe psychological impact. The majority of respondents reported functional impact attributed to hearing loss, balance disturbance, dizziness, eye problems, headache and fatigue; balance disturbance was the symptom most often reported to have a severe functional impact. For most symptoms, psychological and functional impact were related to severity and frequency. CONCLUSION: Of the acoustic neuroma symptoms investigated, hearing loss and balance disturbance were the most likely to have a severe psychological and functional impact, respectively.


Assuntos
Neuroma Acústico/fisiopatologia , Neuroma Acústico/psicologia , Adaptação Psicológica , Adulto , Idoso , Estudos Transversais , Feminino , Perda Auditiva/fisiopatologia , Perda Auditiva/psicologia , Humanos , Masculino , Pessoa de Meia-Idade , Equilíbrio Postural , Inquéritos e Questionários , Zumbido/parasitologia , Zumbido/fisiopatologia , Adulto Jovem
15.
J Clin Neurosci ; 20(11): 1506-13, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-23911106

RESUMO

Primary treatment for growth-hormone secreting pituitary adenomas usually involves surgery, with treatment options for recurrent and persistent disease including repeat surgery, medication and radiation therapy. The majority of previously published series for radiation therapy in acromegaly in the past 20 years have been based on Gamma-Knife (Elekta, Stockholm, Sweden) surgery. To our knowledge, we present the largest series of linear accelerator-based treatment for this disease, with a review of 121 patients treated at our institution; since 1990, 86 patients underwent stereotactic radiosurgery (SRS), 10 patients underwent fractionated stereotactic radiotherapy (FSRT), and for the purposes of comparison we also reviewed 25 patients who underwent conventional radiotherapy prior to 1990. Tumour volume control in all three groups was excellent and consistent with previously reported literature - only three of 86 (4%) patients undergoing SRS had a documented increase in tumour size, and none of the patients undergoing FSRT had a documented increase in size following a median follow-up of 5.5 and 5.1 years for SRS and FSRT, respectively. Target growth hormone levels of <2.5 ng/mL were met by 12 of 86 (14%) of the SRS group, and by two of 10 (20%) in the FSRT group. Target insulin-like growth factor-1 levels of age and sex matched controls were achieved in 16 of 86 patients (18.6%) post-SRS and five of 10 patients (50%) post-FSRT. New hormonal deficits requiring replacement therapy were identified in 17 of 86 (19.8%) patients post-SRS which is consistent with previously published radiosurgical series. Identified non-hormonal morbidity was low (<5%).


Assuntos
Adenoma/radioterapia , Adenoma/cirurgia , Adenoma Hipofisário Secretor de Hormônio do Crescimento/radioterapia , Adenoma Hipofisário Secretor de Hormônio do Crescimento/cirurgia , Adulto , Idoso , Feminino , Hormônio do Crescimento/sangue , Humanos , Fator de Crescimento Insulin-Like I/análise , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Radiocirurgia , Estudos Retrospectivos , Adulto Jovem
16.
J Clin Neurosci ; 19(9): 1228-35, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22840355

RESUMO

The aim of this study was to determine factors of prognostic relevance for paediatric ependymomas, and evaluate the efficacy of treatment modalities. This is a retrospective study of 43 patients with ependymoma (<18 years) who underwent a combination of surgical excision, chemotherapy, and/or radiotherapy treatment at The Prince of Wales Cancer Centre between 1969 and 2009. Statistical analysis was performed to assess the prognostic relevance of various parameters affecting the two-year and five-year overall survival (OS) and progression-free survival (PFS). The five-year OS and PFS were 50.3% and 44.8% respectively (median follow-up 50 months). Eighteen patients (41.9%) experienced tumour recurrence: 13 had a local recurrence (LR) and five had both LR and distant recurrence. On univariate analysis, a more favourable prognosis in terms of both OS and PFS was evident for supratentorial tumours compared to infratentorial tumours (OS p=0.007, PFS p=0.045), stereotactic radiosurgery/ fractionated stereotactic radiotherapy compared to craniospinal irradiation or local posterior fossa/local brain±boost radiotherapy modalities (OS p=0.047, PFS p=0.031), total radiotherapy dose >50 Gy compared to ≤50 Gy (OS p=0.008, PFS p=0.005), and in patients with no tumour recurrence compared to those with recurrence (OS p=0.03, PFS p<0.001). Although not statistically significant, a more favourable multivariate outcome was evident in patients who underwent complete surgical resection. Chemotherapy treatment and histopathological grade, however, were not relevant to prognosis. This study supports the need to pursue more aggressive treatment for infratentorial and/or recurrent tumours. Ideal treatment involves maximal surgical resection, followed by adjuvant radiotherapy (>50 Gy).


Assuntos
Neoplasias Encefálicas/terapia , Ependimoma/terapia , Adolescente , Fatores Etários , Biópsia , Neoplasias Encefálicas/patologia , Carcinoma/patologia , Carcinoma/terapia , Quimiorradioterapia , Criança , Pré-Escolar , Terapia Combinada , Intervalo Livre de Doença , Ependimoma/patologia , Feminino , Humanos , Lactente , Imageamento por Ressonância Magnética , Masculino , Recidiva Local de Neoplasia/epidemiologia , Doenças do Sistema Nervoso/epidemiologia , Doenças do Sistema Nervoso/etiologia , Procedimentos Neurocirúrgicos , Complicações Pós-Operatórias/epidemiologia , Prognóstico , Radioterapia/efeitos adversos , Análise de Regressão , Neoplasias Supratentoriais/patologia , Neoplasias Supratentoriais/terapia , Análise de Sobrevida , Tomografia Computadorizada por Raios X , Resultado do Tratamento
17.
J Clin Neurosci ; 19(3): 370-4, 2012 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-22277561

RESUMO

Non-functioning pituitary adenomas are primarily a surgically managed pathology, but recurrence or regrowth is not uncommon. Previous large series have retrospectively validated the use of the Gamma Knife (GK) as an adjuvant treatment. To our knowledge, we present the largest case series to date with the Linear Accelerator (Linac) for the management of this pathology. In this study we review the clinical course of 118 patients, 51 of whom had stereotactic radiosurgery (SRS) and 67 who had fractionated stereotactic radiotherapy (FSRT); the discriminatory feature being proximity to the optic chiasm. For comparison purposes a population of 53 patients who had conventional radiotherapy (CRT) is included. The local control rates at 5 years for SRS, FRST and CRT were 100%, 93% and 87% respectively. Treatment-related morbidity was low. These data confirm that Linac SRS and FSRT are safe and effective for the treatment of non-functioning pituitary adenomas.


Assuntos
Adenoma/radioterapia , Adenoma/cirurgia , Aceleradores de Partículas , Neoplasias Hipofisárias/radioterapia , Neoplasias Hipofisárias/cirurgia , Radiocirurgia/métodos , Adenoma/patologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Intervalo Livre de Doença , Determinação de Ponto Final , Feminino , Terapia de Reposição Hormonal , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Neoplasias Hipofisárias/patologia , Radiocirurgia/efeitos adversos , Análise de Sobrevida , Resultado do Tratamento , Adulto Jovem
18.
J Clin Neurosci ; 19(2): 246-51, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22051029

RESUMO

The objectives of this study were to describe anxiety and depression levels among acoustic neuroma patients; examine differences in anxiety and depression across the acoustic neuroma management options of microsurgery, radiation and observation; and to investigate management, medical and demographic factors that might predict anxiety and depression in this patient group. A cross-sectional questionnaire was completed by 205 adults diagnosed with, or treated for, a unilateral acoustic neuroma within five years of questionnaire distribution. Median age of participants was 57.0 years, and 120 (58.5%) were female. Anxiety and depression were measured using the Hospital Anxiety and Depression Scale (HADS). Clinically significant anxiety was reported by 29.8% of participants and 10.2% were depressed. Mean anxiety and depression scores did not differ from general population norms. No significant differences in anxiety and depression were found across management options. Time since management, number of symptoms and comorbid medical conditions predicted anxiety, while depression was predicted by number of symptoms. This appears to be the first study among acoustic neuroma patients in which anxiety and depression were compared across management options. Treating physicians should be aware that as the number of acoustic neuroma symptoms increases, so may the likelihood of clinically significant anxiety and depression.


Assuntos
Ansiedade/epidemiologia , Ansiedade/terapia , Depressão/epidemiologia , Depressão/terapia , Neuroma Acústico/epidemiologia , Neuroma Acústico/terapia , Adulto , Idoso , Ansiedade/psicologia , Estudos Transversais , Depressão/psicologia , Gerenciamento Clínico , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neuroma Acústico/psicologia , Inquéritos e Questionários , Adulto Jovem
20.
Br Dent J ; 139(10): 385, 1975 Nov 18.
Artigo em Inglês | MEDLINE | ID: mdl-127593
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA