RESUMO
BACKGROUND: Weight gain is commonly observed during and after breast cancer treatment and is associated with poorer survival outcomes, particularly in women with oestrogen receptor-positive (ER +) disease. The aim of this study was to co-design (with patients) a programme of tailored, personalised support (intervention), including high-quality support materials, to help female breast cancer patients (BCPs) with ER + disease to develop the skills and confidence needed for sustainable weight loss. METHODS: ER + BCPs were recruited from two UK National Health Service (NHS) Trusts. The selection criteria included (i) recent experience of breast cancer treatment (within 36 months of completing primary treatment); (ii) participation in a recent focus group study investigating weight management perceptions and experiences; (iii) willingness to share experiences and contribute to discussions on the support structures needed for sustainable dietary and physical activity behaviour change. Co-design workshops included presentations and interactive activities and were facilitated by an experienced co-design researcher (HH), assisted by other members of the research team (KP, SW and JS). RESULTS: Two groups of BCPs from the North of England (N = 4) and South Yorkshire (N = 5) participated in a two-stage co-design process. The stage 1 and stage 2 co-design workshops were held two weeks apart and took place between Jan-March 2019, with each workshop being approximately 2 h in duration. Guided by the Behaviour Change Wheel, a theoretically-informed weight management intervention was developed on the basis of co-designed strategies to overcome physical and emotional barriers to dietary and physical activity behaviour change. BCPs were instrumental in designing all key features of the intervention, in terms of Capability (e.g., evidence-based information, peer-support and shared experiences), Opportunity (e.g., flexible approach to weight management based on core principles) and Motivation (e.g., appropriate use of goal-setting and high-quality resources, including motivational factsheets) for behaviour change. CONCLUSION: This co-design approach enabled the development of a theoretically-informed intervention with a content, structure and delivery model that has the potential to address the weight management challenges faced by BCPs diagnosed with ER + disease. Future research is required to evaluate the effectiveness of the intervention for eliciting clinically-important and sustainable weight loss in this population.
Assuntos
Neoplasias da Mama , Humanos , Feminino , Medicina Estatal , Redução de Peso , Dieta , EstrogêniosRESUMO
The pathogenesis of low trauma wrist fractures in men is not fully understood. This study found that these men have lower bone mineral density at the forearm itself, as well as the hip and spine, and has shown that forearm bone mineral density is the best predictor of wrist fracture. INTRODUCTION: Men with distal forearm fractures have reduced bone density at the lumbar spine and hip sites, an increased risk of osteoporosis and a higher incidence of further fractures. The aim of this case-control study was to investigate whether or not there is a regional loss of bone mineral density (BMD) at the forearm between men with and without distal forearm fractures. METHODS: Sixty-one men with low trauma distal forearm fracture and 59 age-matched bone healthy control subjects were recruited. All subjects underwent a DXA scan of forearm, hip and spine, biochemical investigations, health questionnaires, SF-36v2 and Fracture Risk Assessment Tool (FRAX). The non-fractured arm was investigated in subjects with fracture and both forearms in control subjects. RESULTS: BMD was significantly lower at the ultradistal forearm in men with fracture compared to control subjects, in both the dominant (mean (SD) 0.386 g/cm2 (0.049) versus 0.436 g/cm2 (0.054), p < 0.001) and non-dominant arm (mean (SD) 0.387 g/cm2 (0.060) versus 0.432 g/cm2 (0.061), p = 0.001). Fracture subjects also had a significantly lower BMD at hip and spine sites compared with control subjects. Logistic regression analysis showed that the best predictor of forearm fracture was ultradistal forearm BMD (OR = 0.871 (0.805-0.943), p = 0.001), with the likelihood of fracture decreasing by 12.9% for every 0.01 g/cm2 increase in ultradistal forearm BMD. CONCLUSIONS: Men with low trauma distal forearm fracture have significantly lower regional BMD at the ultradistal forearm, which contributes to an increased forearm fracture risk. They also have generalised reduction in BMD, so that low trauma forearm fractures in men should be considered as indicator fractures for osteoporosis.
Assuntos
Densidade Óssea/fisiologia , Fraturas por Osteoporose/fisiopatologia , Fraturas do Rádio/etiologia , Fraturas da Ulna/etiologia , Absorciometria de Fóton/métodos , Idoso , Estudos de Casos e Controles , Inglaterra/epidemiologia , Articulação do Quadril/fisiopatologia , Humanos , Vértebras Lombares/fisiopatologia , Masculino , Pessoa de Meia-Idade , Osteoporose/complicações , Osteoporose/epidemiologia , Osteoporose/fisiopatologia , Fraturas por Osteoporose/epidemiologia , Rádio (Anatomia)/fisiopatologia , Fraturas do Rádio/epidemiologia , Fraturas do Rádio/fisiopatologia , Medição de Risco/métodos , Fraturas da Ulna/epidemiologia , Fraturas da Ulna/fisiopatologia , Traumatismos do Punho/epidemiologia , Traumatismos do Punho/etiologia , Traumatismos do Punho/fisiopatologiaRESUMO
BACKGROUND: Obsessive-compulsive disorder (OCD) is often co-morbid with depression. Using the methods of network analysis, we computed two networks that disclose the potentially causal relationships among symptoms of these two disorders in 408 adult patients with primary OCD and co-morbid depression symptoms. METHOD: We examined the relationship between the symptoms constituting these syndromes by computing a (regularized) partial correlation network via the graphical LASSO procedure, and a directed acyclic graph (DAG) via a Bayesian hill-climbing algorithm. RESULTS: The results suggest that the degree of interference and distress associated with obsessions, and the degree of interference associated with compulsions, are the chief drivers of co-morbidity. Moreover, activation of the depression cluster appears to occur solely through distress associated with obsessions activating sadness - a key symptom that 'bridges' the two syndromic clusters in the DAG. CONCLUSIONS: Bayesian analysis can expand the repertoire of network analytic approaches to psychopathology. We discuss clinical implications and limitations of our findings.
Assuntos
Teorema de Bayes , Depressão/fisiopatologia , Transtorno Depressivo/fisiopatologia , Modelos Estatísticos , Transtorno Obsessivo-Compulsivo/fisiopatologia , Adolescente , Adulto , Idoso , Comorbidade , Depressão/epidemiologia , Transtorno Depressivo/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Transtorno Obsessivo-Compulsivo/epidemiologia , Adulto JovemRESUMO
OBJECTIVES: Depression in older people is commonly under diagnosed and is associated with increased morbidity and mortality. Because older people currently occupy 65% of acute hospital beds, it is crucial for them to be properly assessed for depression to optimise their medical care. The aim of this study was to identify potential risk factors for depression in the medically ill in order to improve their inpatient care. METHODS: This was a 2-year observational study of consequent referrals to the Newcastle Liaison Team for Older Adults. Out of a total number of 1586 referred patients, 1197 were included in the final analysis of data. Information about their age, main medical history, cognitive impairment and use of antidepressants was collected. All subjects were screened for dementia, depression and delirium. Proportions were compared using the chi-squared test. Clinical depression as a binary variable was modelled using logistic regression. RESULTS: Higher risk for depression was associated with pain (odds ratio (OR) = 1.76; p = 0.033) and a previous history of depression (OR = 2.22; p < 0.001). Cognitive impairment (OR = 0.44, p < 0.001) and delirium (OR = 0.49; p < 0.001) decreased the likelihood for having depression. Subjective feelings of emptiness, being unhappy and depressed alone (R2 = 37.4%) and cognitive impairment (R2 = 39.5%) were the best multivariable model to explain depression in medically ill people. CONCLUSION: Dysphoric mood results in depression in older people with medical health problems. Copyright © 2016 John Wiley & Sons, Ltd.
Assuntos
Doença Crônica/psicologia , Transtorno Depressivo/etiologia , Idoso , Idoso de 80 Anos ou mais , Transtornos Cognitivos/complicações , Disfunção Cognitiva/complicações , Delírio/complicações , Demência/complicações , Transtorno Depressivo/psicologia , Feminino , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Razão de Chances , Dor/complicações , Satisfação Pessoal , Fatores de RiscoRESUMO
BACKGROUND: Earlier studies have shown raised risks of leukaemia and non-Hodgkin lymphoma in children, teenagers and young adults resident either at birth or diagnosis in Seascale. Some increases in cancer risk in these age groups have also been noted among those living around Dounreay. We aimed to update previous analyses relating to areas close to these nuclear installations by considering data from an additional 16 years of follow-up. METHODS: Cross-sectional analyses compared cancer incidence rates for 1963-2006 among those aged 0-24 years at diagnosis living in geographically specified areas around either Sellafield or Dounreay with general population rates. Cancer incidence for the period 1971-2006 among the cohort of Cumbrian births between 1950 and 2006 was compared to national incidence for 1971-2006 using person-years analysis. Cancer among those born in the postcode sector closest to Dounreay was compared with that among those born in the three adjoining postcode sectors. Analyses considered both cancer overall and ICD-O-3 defined diagnostic subgroups including leukaemia, central nervous system tumours and other malignancies. RESULTS: Apart from previously reported raised risks, no new significantly increased risks for cancer overall or any diagnostic subgroup were found among children or teenagers and young adults living around either nuclear installation. Individuals born close to the installations from 1950 to 2006 were not shown to be at any increased risk of cancer during the period 1971 to date. CONCLUSIONS: Analysis of recent data suggests that children, teenagers and young adults currently living close to Sellafield and Dounreay are not at an increased risk of developing cancer. Equally, there is no evidence of any increased cancer risk later in life among those resident in these areas at birth.
Assuntos
Neoplasias Induzidas por Radiação/epidemiologia , Reatores Nucleares , Cinza Radioativa/efeitos adversos , Características de Residência , Adolescente , Adulto , Criança , Pré-Escolar , Estudos de Coortes , Estudos Transversais , Feminino , Seguimentos , Humanos , Incidência , Lactente , Recém-Nascido , Masculino , Neoplasias Induzidas por Radiação/etiologia , Prognóstico , Fatores de Risco , Reino Unido/epidemiologia , Adulto JovemRESUMO
BACKGROUND: Although cancer is relatively rare in teenagers and young adults (TYAs) aged 15-24 years, it is a major cause of death in this age group. This study investigated survival trends in TYA cancer diagnosed in Northern England, 1968-2008. METHODS: Five-year survival was analyzed using Kaplan-Meier estimation for four successive time periods. Cox regression analysis was used to investigate associations with demographic factors. RESULTS: The study included 2,987 cases (1,634 males, 1,353 females). Five-year survival for all patients with cancer improved greatly from 46% in 1968-1977 to 84% in 1998-2008 (P < 0.001), for patients with leukemia from 2% to 71% (P < 0.001), lymphoma from 66% to 86% (P < 0.001), central nervous system tumors from 53% to 84% (P < 0.001), bone tumors from 29% to 72% (P < 0.001), germ cell tumors from 39% to 94% (P < 0.001), melanoma and skin cancer from 64% to 100% (P < 0.001), and carcinomas from 48% to 80% (P < 0.001). Cox analysis showed that for all patients with cancer, survival was better for females than males (HR = 0.83; 95% CI 0.74-0.94, P < 0.001), for patients aged 20-24 years compared with those aged 15-19 years (HR = 0.84; 95% CI 0.75-0.94, P = 0.002), but survival was worse for patients who resided in more deprived areas (HR = 1.06; 95% CI 1.01-1.11, P = 0.025). CONCLUSION: There have been large improvements in TYA cancer survival in Northern England over the last four decades. Future work should determine factors that could lead to even better survival, including possible links with delayed diagnosis.
Assuntos
Mortalidade/tendências , Neoplasias/mortalidade , Adolescente , Adulto , Criança , Pré-Escolar , Inglaterra/epidemiologia , Feminino , Seguimentos , Humanos , Lactente , Recém-Nascido , Masculino , Neoplasias/classificação , Prognóstico , Taxa de Sobrevida , Fatores de Tempo , Adulto JovemRESUMO
BACKGROUND: Despite marked improvements in childhood leukaemia survival, 20% still die within 5 years of diagnosis. The aim of this study was to evaluate the relationship between socioeconomic status, as assessed by paternal occupation at birth, and survival from childhood leukaemia in children, using data from the Northern Region Young Persons Malignant Disease Registry. METHODS: All 1007 cases of leukaemia in children aged 0-14 years, diagnosed between 1968 and 2010 and registered with the Registry were studied. Paternal occupational social class at the time of the child's birth was obtained and analysed in relation to survival using Cox-proportional regression. RESULTS: Compared with the most advantaged group (I/II), those in the middle group (IIIN/M) had a 68% increased risk of death, while those in the least advantaged group (IV/V) had 86% higher risk for acute lymphoblastic leukaemia. While the survival advantage of children in class I/II was apparent from the time of diagnosis, survival for children in groups IIIN/M and IV/V were comparable until 3-4 years after diagnosis, when they began to minimally diverge. CONCLUSION: The existence of such socioeconomic disparities cannot be attributed to accessibility to health care in the United Kingdom. Further research into the likely factors underlying these disparities is required.
Assuntos
Leucemia/mortalidade , Adolescente , Adulto , Criança , Pré-Escolar , Inglaterra/epidemiologia , Feminino , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Disparidades nos Níveis de Saúde , Humanos , Lactente , Recém-Nascido , Leucemia/economia , Leucemia/epidemiologia , Masculino , Prognóstico , Estudos Retrospectivos , Classe Social , Adulto JovemRESUMO
BACKGROUND: Large sessile or flat colonic polyps, defined as polyps at least 20 mm in size, are difficult to treat endoscopically and may harbour malignancy. The aim of this study was to describe their current management to provide insight into optimal management. METHODS: This retrospective observational study identified patients with large sessile or flat polyps detected in the English Bowel Cancer Screening Programme between 2006 and 2009. Initial therapeutic modality (surgical or endoscopic), subsequent management and outcomes were recorded. The main outcome measures analysed were: presence of malignancy, need for surgical treatment, complications, and residual or recurrent polyp at 12 months. RESULTS: In total, 557 large sessile or flat polyps with benign appearance or initial histology were identified in 557 patients. Some 436 (78.3 per cent) were initially managed endoscopically and 121 (21.7 per cent) were managed surgically from the outset. Seventy of those initially treated endoscopically subsequently required surgery owing to the presence of malignancy (19) or not being suitable for further endoscopic management (51). Residual or recurrent polyp was present at 12 months in 26 (6.0 per cent) of 436 patients managed endoscopically. There was wide variation between centres in the use of surgery as a primary therapy, ranging from 7 to 36 per cent. Endoscopic complications included bleeding in 13 patients (3.0 per cent) and perforation in two (0.5 per cent). CONCLUSION: Management of large sessile or flat colonic polyps is safe and effective in the English Bowel Cancer Screening Programme. Wide variation in the use of surgery suggests a need for standardized management algorithms. Presented to a meeting of the British Society of Gastroenterology, Birmingham, U.K., March 2011.
Assuntos
Pólipos do Colo/cirurgia , Colonoscopia/estatística & dados numéricos , Idoso , Neoplasias do Colo/prevenção & controle , Pólipos do Colo/diagnóstico , Colonoscopia/métodos , Detecção Precoce de Câncer/estatística & dados numéricos , Inglaterra , Feminino , Humanos , Tempo de Internação , Masculino , Programas de Rastreamento/estatística & dados numéricos , Pessoa de Meia-Idade , Complicações Pós-Operatórias/etiologia , Recidiva , Estudos Retrospectivos , Resultado do TratamentoRESUMO
BACKGROUND AND STUDY AIMS: Increasing colonoscopy withdrawal time (CWT) is thought to be associated with increasing adenoma detection rate (ADR). Current English guidelines recommend a minimum CWT of 6 minutes. It is known that in the Bowel Cancer Screening Programme (BCSP) in England there is wide variation in CWT. The aim of this observational study was to examine the relationship between CWT and ADR. PATIENTS AND METHODS: The study examined data from 31 088 colonoscopies by 147 screening program colonoscopists. Colonoscopists were grouped in four levels of mean CWT (â<â7, 7â-â8.9, 9â-â10.9, andâ≥â11 minutes). Univariable and multivariable analysis (binary logistic and negative binomial regression) were used to explore the relationship between CWT, ADR, mean number of adenomas and number of right-sided and advanced adenomas. RESULTS: In colonoscopists with a mean CWTâ<â7 minutes, the mean ADR was 42.5â% compared with 47.1â% in theâ≥â11-minute group (Pâ<â0.001). The mean number of adenomas detected per procedure increased from 0.77 to 0.94, respectively (Pâ<â0.001). The increase in adenoma detection was mainly of subcentimeter or proximal adenomas; there was no increase in the detection of advanced adenomas. Regression models showed an increase in ADR from 43â% to 46.5â% for mean CWT times ranging from 6 to 10 minutes. CONCLUSIONS: This study demonstrates that longer mean withdrawal times are associated with increasing adenoma detection, mainly of small or right-sided adenomas. However, beyond 10 minutes the increase in ADR is minimal. Mean withdrawal times longer than 6 minutes are not associated with increased detection of advanced adenomas. Withdrawal time remains an important quality metric of colonoscopy.
Assuntos
Adenoma/diagnóstico , Colonoscopia/métodos , Neoplasias Colorretais/diagnóstico , Remoção de Dispositivo/estatística & dados numéricos , Padrões de Prática Médica/estatística & dados numéricos , Idoso , Detecção Precoce de Câncer , Inglaterra , Feminino , Humanos , Masculino , Análise de Regressão , Fatores de TempoRESUMO
AIM: Current British guidelines recommend surveillance colonoscopy at 12 months for individuals found to have five or more adenomas, or three or more adenomas of which at least one is ≥ 1 cm in size. This study describes the yield of surveillance colonoscopy in this group and explores patient and clinical factors that may be associated with the presence of advanced adenomas or cancer at surveillance. METHOD: Data were retrieved from the national database of the National Health Service Bowel Cancer Screening Programme. The detection of advanced colonic neoplasia (ACN, cancer or advanced adenoma) was used as the main outcome variable. Multivariable analysis was used to analyse relationships between patient factors (age, gender, body mass index, smoking and alcohol use) and clinical findings (number, size and nature of adenomas detected during index colonoscopy) with the outcome variable. RESULTS: One-thousand, seven-hundred and sixty individuals were included in the study. The yield of ACN at 12-month surveillance was 6.6% (116/1760), of which 14/1760 (0.8%) had colorectal cancer. Nine (64.3%) of these 14 cancers were Dukes A at diagnosis. The presence of a villous adenoma or a right-sided adenoma at screening colonoscopy was associated with ORs of 1.98 (95% CI: 1.11-3.53, P = 0.012) and 1.76 (95% CI: 1.13-2.74, P = 0.020), respectively, for detection of ACN at surveillance. CONCLUSION: Twelve-month surveillance colonoscopy is necessary in this group of patients. The presence of villous or proximal lesions at baseline is associated with increased risk of ACN at surveillance. Site and histological type of baseline lesions may be relevant for determining the surveillance interval.
Assuntos
Adenoma/diagnóstico , Neoplasias do Colo/diagnóstico , Colonoscopia/normas , Detecção Precoce de Câncer/métodos , Programas de Rastreamento/estatística & dados numéricos , Adenoma/epidemiologia , Idoso , Neoplasias do Colo/epidemiologia , Feminino , Humanos , Incidência , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Razão de Chances , Fatores de Risco , Medicina Estatal , Reino UnidoRESUMO
BACKGROUND: Cancer is the second most common cause of death in children in the developed world. The study investigated patterns and trends in survival from childhood cancer in patients from northern England diagnosed 1968-2005. METHODS: Five-year survival was analysed using Kaplan-Meier estimation for four successive time periods. Cox regression analysis was used to explore associations with age and demographic factors. RESULTS: The study included 2958 cases (1659 males and 1299 females). Five-year survival for all cancers improved significantly from 39% in 1968-1977 to 79% in 1998-2005 (P<0.001). Five-year survival for leukaemia increased from 24% to 81% (P<0.001), lymphoma from 46% to 87% (P<0.001), central nervous system tumours from 43% to 73% (P<0.001), bone tumours from 21% to 75% (P<0.001), soft tissue sarcoma from 30% to 58% (P<0.001) and germ cell tumours from 59% to 97% (P<0.001). Survival was worse for cases of acute lymphoblastic leukaemia (P<0.001) and astrocytoma (P<0.001) aged 10-14 years compared with 0-4-year olds. CONCLUSION: There were marked improvements in survival over a 38-year time span. Future work should examine factors that could influence further improvement in survival such as diagnosis delays.
Assuntos
Neoplasias/mortalidade , Sobrevida , Adolescente , Neoplasias Ósseas/mortalidade , Neoplasias do Sistema Nervoso Central/mortalidade , Criança , Pré-Escolar , Inglaterra , Feminino , Humanos , Lactente , Recém-Nascido , Leucemia/mortalidade , Linfoma/mortalidade , Masculino , Mortalidade/tendências , Neoplasias Embrionárias de Células Germinativas , Sarcoma/mortalidade , Taxa de Sobrevida/tendênciasRESUMO
There is a paucity of population-based studies examining incidence and survival trends in childhood bone tumours. We used high quality data from four population-based registries in England. Incidence patterns and trends were described using Poisson regression. Survival trends were analysed using Cox regression. There were 374 cases of childhood (ages 0-14 years) bone tumours (206 osteosarcomas, 144 Ewing sarcomas, 16 chondrosarcomas, 8 other bone tumours) registered in the period 1981-2002. Overall incidence (per million person years) rates were 2.63 (95% confidence interval (CI) 2.27-2.99) for osteosarcoma, 1.90 (1.58-2.21) for Ewing sarcoma and 0.21 (0.11-0.31) for chondrosarcoma. Incidence of Ewing sarcoma declined at an average rate of 3.1% (95% CI 0.6-5.6) per annum (P=0.04), which may be due to tumour reclassification, but there was no change in osteosarcoma incidence. Survival showed marked improvement over the 20 years (1981-2000) for Ewing sarcoma (hazard ratio (HR) per annum=0.95 95% CI 0.91-0.99; P=0.02). However, no improvement was seen for osteosarcoma patients (HR per annum=1.02 95% CI 0.98-1.05; P=0.35) over this time period. Reasons for failure to improve survival including potential delays in diagnosis, accrual to trials, adherence to therapy and lack of improvement in treatment strategies all need to be considered.
Assuntos
Neoplasias Ósseas/epidemiologia , Adolescente , Neoplasias Ósseas/mortalidade , Criança , Pré-Escolar , Inglaterra/epidemiologia , Feminino , Humanos , Incidência , Lactente , Recém-Nascido , Masculino , Osteossarcoma/epidemiologia , Modelos de Riscos Proporcionais , Sarcoma de Ewing/epidemiologia , Taxa de SobrevidaRESUMO
BACKGROUND: Medulloblastoma and primitive neuroectodermal tumours (PNET) are the most common central nervous system (CNS) embryonal tumours diagnosed in childhood. Survival outcomes are worse for children diagnosed with CNS PNET compared to medulloblastoma. Less is known about survival outcomes in teenagers and young adults (TYA). METHODS: Data were extracted from two population-based cancer registries of children and young people (0-24 years) in the north of England for all diagnoses of medulloblastoma and CNS PNET between 1990 and 2013. Incidence and survival trends were analysed using Poisson and Cox regression. RESULTS: Between 1990 and 2013, 197 medulloblastomas and 58 CNS PNET were diagnosed, age-standardised incidence rates of 3.8 and 1.5 per million, respectively. Medulloblastoma incidence decreased over time while there was no significant change in trend for CNS PNET. The overall 5-year survival rate was 54%. The risk of death was 2.4 times higher (95% confidence interval [CI] 1.6, 3.7) for patients with CNS PNET compared to medulloblastoma, after adjustment for patient characteristics. There was a 39% reduction (95% CI 0.43, 0.87) in the risk of death for patients diagnosed between 2000 and 2013 compared to 1990-1999. Risk of death did not differ for TYA (15-24 years) compared to children aged 5-9 years. CONCLUSIONS: Medulloblastoma incidence decreased over time and differences in survival between medulloblastoma and PNET emerged within the first-year post diagnosis leading to poorer outcomes for children and young adults diagnosed with PNET; however, a significant improvement in survival over time was observed.
Assuntos
Neoplasias do Sistema Nervoso Central/epidemiologia , Neoplasias Embrionárias de Células Germinativas/epidemiologia , Adolescente , Adulto , Criança , Pré-Escolar , Inglaterra/epidemiologia , Feminino , Humanos , Incidência , Lactente , Masculino , Taxa de Sobrevida , Adulto JovemRESUMO
The spectrum and frequency of cancers associated with germline TP53 mutations are uncertain. To address this issue a cohort of individuals from 28 families with Li-Fraumeni syndrome, segregating germline TP53 mutations was established. Predicted cancers were estimated by applying age, morphology, site and sex-specific UK cancer statistics to person-years at risk. Observed and predicted cancers were compared and two-sided P-values calculated. Cancer types occurring to excess and showing P-values <0.02, were designated strongly associated with germline TP53 mutations. These were removed from the data and a second round of analyses performed. Cancer types with P-values <0.02 and 0.02-0.05 in the second round analyses were considered moderately and weakly associated respectively. Strongly associated cancers were: breast carcinoma, soft tissue sarcomas, osteosarcoma, brain tumours, adrenocortical carcinoma, Wilms' tumour and phyllodes tumour. Carcinoma of pancreas was moderately associated. Leukaemia and neuroblastoma were weakly associated. Other common carcinomas including lung, colon, bladder, prostate, cervix and ovary did not occur to excess. Although breast carcinoma and sarcomas were numerically most frequent, the greatest increases relative to general population rates were in adrenocortical carcinoma and phyllodes tumour. We conclude that germline TP53 mutations do not simply increase general cancer risk. There are tissue-specific effects.
Assuntos
Mutação em Linhagem Germinativa , Síndrome de Li-Fraumeni/epidemiologia , Síndrome de Li-Fraumeni/genética , Proteína Supressora de Tumor p53/genética , Adolescente , Adulto , Idoso , Criança , Pré-Escolar , Estudos de Coortes , Saúde da Família , Feminino , Predisposição Genética para Doença , Heterozigoto , Humanos , Lactente , Síndrome de Li-Fraumeni/patologia , Masculino , Pessoa de Meia-IdadeRESUMO
To test the hypothesis that infectious exposures may be involved in glioma aetiology, we have analysed space-time clustering and seasonal variation using population-based data from the South of The Netherlands between 1983 and 2001. Knox tests for space-time interactions between cases were applied, with spatial coordinates of the addresses at time of diagnosis, and with distance to the Nth nearest neighbour. Data were also analysed by a second order procedure based on K-functions. Tests for heterogeneity and Edwards' test for sinusoidal variation were applied to examine seasonal variation of incidence. There was statistically significant space-time clustering in the Eastern, but not in the Western part of the region. Clustering was only present in adults, particularly in less densely populated areas. There was no evidence for seasonal variation. The results support a role for infectious exposures in glioma aetiology that may act preferentially in certain geographical areas.
Assuntos
Neoplasias Encefálicas/microbiologia , Glioma/microbiologia , Infecções/epidemiologia , Adolescente , Adulto , Distribuição por Idade , Idoso , Neoplasias Encefálicas/epidemiologia , Criança , Pré-Escolar , Feminino , Glioma/epidemiologia , Humanos , Incidência , Lactente , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Países Baixos/epidemiologia , Estações do Ano , Conglomerados Espaço-TemporaisRESUMO
BACKGROUND: Relative regional cerebral blood flow (rCBF) changes were measured in Vietnam combat veterans with and without posttraumatic stress disorder (PTSD) during exposure to combat-related stimuli. METHODS: Positron emission tomography was used to measure rCBF in 7 combat veterans with PTSD (PTSD group) and 7 healthy combat veterans (control group) who viewed and generated visual mental images of neutral, negative, and combat-related pictures. RESULTS: Unlike control subjects, subjects with PTSD had increased rCBF in ventral anterior cingulate gyrus and right amygdala when generating mental images of combat-related pictures; when viewing combat pictures, subjects with PTSD showed decreased rCBF in Broca's area. CONCLUSIONS: Results suggest that ventral anterior cingulate gyrus and right amygdala play a role in the response of combat veterans with PTSD to mental images of combat-related scenes. Reexperiencing phenomena of PTSD, which often involve emotional visual mental imagery, may be likewise associated with increased rCBF in these regions.
Assuntos
Circulação Cerebrovascular , Imaginação , Transtornos de Estresse Pós-Traumáticos/diagnóstico por imagem , Transtornos de Estresse Pós-Traumáticos/psicologia , Tomografia Computadorizada de Emissão , Percepção Visual , Tonsila do Cerebelo/irrigação sanguínea , Tonsila do Cerebelo/diagnóstico por imagem , Tonsila do Cerebelo/fisiologia , Lateralidade Funcional/fisiologia , Giro do Cíngulo/irrigação sanguínea , Giro do Cíngulo/diagnóstico por imagem , Giro do Cíngulo/fisiologia , Humanos , Imaginação/fisiologia , Masculino , Pessoa de Meia-Idade , Fluxo Sanguíneo Regional , Percepção Visual/fisiologia , GuerraRESUMO
The age-sex distributions and temporal trends in incidence of leukaemia and lymphoma from the Manchester Children's Tumour Registry (MCTR), 1954-1998, are reported. This 45-year study includes 1795 children, all of whom had a histologically and/or cytologically verified leukaemia or lymphoma. At the time of their diagnoses all the children were under 15 years of age and were resident in a geographically defined area of northwest England covered by the MCTR. Log-linear modelling identified significant linear increases in acute lymphoblastic leukaemia (ALL) (average annual increase 0.7%; P= 0.005) and in Hodgkin's disease (HD) (1.2%, P=0.04), but not in acute myeloid leukaemia (AML), nor in non-Hodgkin's lymphoma (NHL). The increase in ALL was most pronounced amongst males, aged 1-4 years, and is likely to be due to precursor B-cell leukaemias. The increases in ALL and HD are discussed in relation to current hypotheses suggesting a role for infection. Additionally, a non-linear cohort effect was identified for NHL (P= 0.008), which may indicate the involvement of environmental factors other than infection.
Assuntos
Leucemia/epidemiologia , Linfoma/epidemiologia , Doença Aguda , Adolescente , Fatores Etários , Criança , Pré-Escolar , Inglaterra/epidemiologia , Medidas em Epidemiologia , Feminino , Doença de Hodgkin/epidemiologia , Doença de Hodgkin/etiologia , Humanos , Incidência , Lactente , Leucemia/etiologia , Leucemia Mieloide/epidemiologia , Leucemia Mieloide/etiologia , Linfoma/etiologia , Linfoma não Hodgkin/epidemiologia , Linfoma não Hodgkin/etiologia , Masculino , Modelos Estatísticos , Leucemia-Linfoma Linfoblástico de Células Precursoras/epidemiologia , Leucemia-Linfoma Linfoblástico de Células Precursoras/etiologia , Sistema de Registros , Fatores SexuaisRESUMO
Patients with acromegaly have a reduced life expectancy, with the accepted causes for premature death being vascular and respiratory disease. Increased mortality from malignant disease has also been reported. We, therefore, performed a multicenter retrospective cohort study of 1362 patients with acromegaly and investigated the relationships of mortality and cancer incidence with GH levels, duration of disease, and age at diagnosis. The overall cancer incidence rate [standardized incidence ratio, 0.76; 95% confidence interval (CI), 0.60-0.95] was lower than that in the general population of the United Kingdom, and there was no significant increase in site-specific cancer incidence rates. The overall cancer mortality rate was not increased, but the colon cancer mortality rate (standardized mortality ratio, 2.47; 95% CI, 1.31-4.22) was higher than expected. Mortality rates due to colon cancer, all malignant disease, cardiovascular disease and overall mortality were increased with higher posttreatment GH levels (P for trends, <0.02, <0.05, <0.02, and <0.0001). The overall mortality rate in patients with acromegaly with posttreatment GH levels less than 2.5 ng/mL (5 mU/L) was comparable to that in the general population of the United Kingdom (standardized mortality ratio, 1.10; 95% CI, 0.89-1.35). We conclude that high posttreatment GH levels are associated with an increased overall mortality rate and increased mortality rates due to colon cancer, cardiovascular disease, and all malignant disease. Posttreatment GH levels less than 2.5 ng/mL (5 mU/L) result in an overall mortality rate similar to that in the general population.
Assuntos
Acromegalia/complicações , Acromegalia/mortalidade , Neoplasias/complicações , Neoplasias/epidemiologia , Neoplasias da Mama/complicações , Neoplasias da Mama/epidemiologia , Causas de Morte , Transtornos Cerebrovasculares/complicações , Transtornos Cerebrovasculares/mortalidade , Estudos de Coortes , Neoplasias do Colo/complicações , Neoplasias do Colo/epidemiologia , Neoplasias do Colo/mortalidade , Feminino , Humanos , Masculino , Neoplasias/mortalidade , Estudos RetrospectivosRESUMO
BACKGROUND: The emotional counting Stroop (ecStroop) functional magnetic resonance imaging (fMRI) activation paradigm was designed to recruit the anterior cingulate affective division (ACad). METHODS: Nine normal, healthy male and female subjects (mean age 24.2 years) reported via button press the number of neutral and negative words that appeared on a screen while reaction time and fMRI data were acquired. RESULTS: We observed a) greater ACad activation for negative versus neutral words during initial presentation blocks; b) lower overall ACad signal intensity during task performance (i.e., both negative and neutral words) compared to the baseline fixation condition; and c) no reaction time increase to negative versus neutral words. CONCLUSIONS: In a companion study of a cognitive version of the counting Stroop (Bush et al 1998), these same 9 subjects a) activated the more dorsal anterior cingulate cognitive division; b) also showed the overall decrease in ACad signal intensity; and c) demonstrated a reliable reaction time effect. Taken together, these data offer a within-group spatial dissociation of AC function based upon information content (i.e., cognitive vs. emotional) and/or presence of behavioral interference. We propose that the ecStroop will be a useful fMRI probe of ACad function in anxiety disorders.