RESUMO
The purpose of this enquiry was to understand how gay men form and maintain their attitudes toward HIV transmission preventative behaviors. Autobiographical life histories of sixteen gay men showed that once they acquired knowledge of preventative behavior they consistently adhered to that behavior. They adhered because of fear of HIV infection and because they held a moral norm that obligated them to behave altruistically (Schwartz, 1977) to protect not only themselves, but also their sex partners, loved ones, and their positive self-evaluation. They saw their HIV negative status, and their adherence, as pre-requisite and enabler for achieving their goals in life. Dick and Basu's (1994) Framework for Customer Loyalty, a commercial marketing communications theoretical framework, explains development and maintenance of these men's loyalty (their consistent adherence). This understanding, within a marketing communications framework, will inform development of social marketing communications aiming to increase adherence to behaviors that prevent HIV transmission.
Assuntos
Síndrome da Imunodeficiência Adquirida , Infecções por HIV , Minorias Sexuais e de Gênero , Masculino , Humanos , Síndrome da Imunodeficiência Adquirida/prevenção & controle , Infecções por HIV/prevenção & controle , Homossexualidade Masculina , Altruísmo , Princípios Morais , Comportamento Sexual , Conhecimentos, Atitudes e Prática em SaúdeRESUMO
Although the impact of tourism development on residents has received a lot of attention in the literature, the health impact of tourism has not been sufficiently addressed. Due to outbreaks of COVID-19, the importance of recognition of the negative health impact of tourism is relevant. Thus, the present study aims to identify the health impact of tourism through COVID-19 outbreaks considering residents' perspectives. In the current research, we gathered data from semi-structured interviews conducted from 10th August to 30 August 2020 to investigate community perception regarding the negative health impact of tourism through the COVID-19 era. We conducted 30 interviews with some Iranian residents. Data is analyzed by thematic analysis via MAXQDA software. Residents perceived negative health impacts through COVID-19 outbreaks as containing three subthemes including general negative impacts, direct negative impacts, and indirect negative impacts. The results also show that residents use two coping strategies to face these negative health impacts, namely negative coping strategies and positive coping strategies. Perceived negative health impacts, and residents' coping strategies are two major themes regarding Iranian residents' perception toward tourism negative health impacts through COVID-19 outbreaks.
RESUMO
Social media platforms are increasingly used to disseminate social marketing messages about mental health and wellbeing. This study presents a range of message appeals used in social media enabled mental health promotion and stigma reduction messages. Furthermore, it examines the relationship between the type of message appeals and audience engagement. A content analysis of 65 organisation-generated YouTube videos about depression and anxiety and stigma reduction was conducted. The most utilised message appeal was Sorrow, followed by Affiliation, Ease/Convenience, Hope, Humour, Guilt/Shame, Heroic/Successful, and Fear. Multiple regression analysis was used to examine the relationship between the type of message appeals and audience engagement in terms of the number of likes, comments, and shares. The analysis revealed that Sorrow is the most useful message appeal for generating audience comments. However, Sorrow is negatively associated with the number of likes and shares. The results suggest that mental health promotion messages may engage a larger audience through Affiliation and Hope as they have a positive impact on the number of shares. This could, in effect, turn audiences into vocal advocates for mental health promotion and stigma reduction messages.
Assuntos
Emoções , Promoção da Saúde , Saúde Mental , Comunicação Persuasiva , Mídias Sociais , Austrália , HumanosAssuntos
Armas de Fogo/estatística & dados numéricos , Centros de Traumatologia/estatística & dados numéricos , Ferimentos por Arma de Fogo/epidemiologia , Adolescente , Distribuição por Idade , Criança , Pré-Escolar , Armas de Fogo/classificação , Armas de Fogo/legislação & jurisprudência , Humanos , Lactente , Recém-Nascido , Louisiana/epidemiologia , Propriedade/legislação & jurisprudência , Propriedade/estatística & dados numéricos , Estudos Retrospectivos , Tamanho da Amostra , Distribuição por Sexo , Ferimentos por Arma de Fogo/classificação , Ferimentos por Arma de Fogo/etiologia , Adulto JovemRESUMO
The impact of cancer involving the peripancreatic soft tissue (PST), irrespective of margin status, following a resection of pancreatic adenocarcinoma is not known. The purpose of this study is to determine such an impact on a cohort of patients. Data from 274 patients who underwent pancreatic surgery by our team between 1998 and 2012 was reviewed. Of those 119 patients who had pancreatic resection for adenocarcinoma were retrospectively analyzed. Patients were categorized into 3 groups: Group 1 = R1 resection (N = 39), Group 2 = R0 with involved PST (N = 54), and Group 3 = R0 with uninvolved PST (N = 26). Demographics, operative data, tumor characteristics and overall survival (OS) were evaluated. Operations performed were: Whipple (N = 53), pylorus sparing Whipple (N = 41), total pancreatectomy (N = 11), and other (N = 14). Median OS for Groups 1, 2, and 3 were 8.5 months, 12 months, and 69.6 months respectively (P < 0.001). Tumor size (P = 0.016), margin status (P = 0.006), grade (P = 0.001), stage (P = 0.037), PST status (P < 0.001), complications (P = 0.046), transfusion history (P = 0.003) were all predictors of survival. Cox regression analysis demonstrated that grade (HR = 3.1), PST involvement (HR = 2.7), transfusion requirement (HR = 2.6) and margin status (HR = 2.0) were the only independent predictors of mortality. PST is a novel predictor of poor outcome for patients with resected pancreatic cancer.
Assuntos
Adenocarcinoma/patologia , Pancreatectomia , Neoplasias Pancreáticas/patologia , Neoplasias de Tecidos Moles/patologia , Adenocarcinoma/mortalidade , Adenocarcinoma/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Invasividade Neoplásica , Estadiamento de Neoplasias , Neoplasias Pancreáticas/mortalidade , Neoplasias Pancreáticas/cirurgia , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Neoplasias de Tecidos Moles/mortalidade , Neoplasias de Tecidos Moles/cirurgia , Taxa de Sobrevida , Resultado do TratamentoRESUMO
INTRODUCTION: Bilateral carotid artery dissection following blunt trauma is a rare but potentially lethal injury if not diagnosed early and treated. CASE REPORT: We report a collision patient who suffered bilateral asymptomatic carotid artery dissections. He also had multiple fractures of the pelvis and upper and lower extremities. The patient was managed acutely with aspirin. He underwent open reduction and internal fixation of fractures without complication and was discharged home on aspirin. DISCUSSION: Carotid artery dissections are increasingly being recognized in blunt trauma patients. Management options include systemic anticoagulation versus antiplatelet therapy. The need to acutely address the carotid artery injury must be balanced with the need for hemostasis with associated solid organ injury and/or future operative procedures. CONCLUSIONS: Carotid artery dissections should be screened for in patients with appropriate mechanism of injury. This case report details the successful management of a patient of bilateral carotid artery dissection and other major orthopedic injuries using aspirin.
Assuntos
Acidentes de Trânsito , Dissecção Aórtica/diagnóstico por imagem , Lesões das Artérias Carótidas/diagnóstico por imagem , Lesões do Pescoço/diagnóstico por imagem , Ferimentos não Penetrantes/diagnóstico por imagem , Dissecção Aórtica/etiologia , Dissecção Aórtica/cirurgia , Lesões das Artérias Carótidas/etiologia , Lesões das Artérias Carótidas/cirurgia , Diagnóstico Diferencial , Humanos , Masculino , Lesões do Pescoço/etiologia , Lesões do Pescoço/cirurgia , Radiografia , Ferimentos não Penetrantes/etiologia , Ferimentos não Penetrantes/cirurgia , Adulto JovemRESUMO
Abdominal aortic injury as a result of blunt trauma is a rare event and has been described in few children. A 6-year-old girl presented with acute bilateral lower extremity ischemia, and a triad of acute aortic occlusion, intra-abdominal visceral injury, and a lumbar chance fracture after sustaining a seat belt injury from a motor vehicle collision. An emergency aortic thromboendarterectomy and primary repair were performed. This represents one of the few reports of acute traumatic aortic thrombosis in a child and highlights the surgical treatment of acute abdominal aortic injury in a pediatric patient.
Assuntos
Acidentes de Trânsito , Aorta Abdominal/cirurgia , Doenças da Aorta/cirurgia , Arteriopatias Oclusivas/cirurgia , Endarterectomia , Cintos de Segurança/efeitos adversos , Trombose/cirurgia , Lesões do Sistema Vascular/cirurgia , Doença Aguda , Aorta Abdominal/diagnóstico por imagem , Aorta Abdominal/lesões , Doenças da Aorta/diagnóstico por imagem , Doenças da Aorta/etiologia , Aortografia/métodos , Arteriopatias Oclusivas/diagnóstico por imagem , Arteriopatias Oclusivas/etiologia , Criança , Feminino , Humanos , Isquemia/etiologia , Extremidade Inferior/irrigação sanguínea , Vértebras Lombares/lesões , Fraturas da Coluna Vertebral/etiologia , Trombose/diagnóstico por imagem , Trombose/etiologia , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Lesões do Sistema Vascular/diagnóstico por imagem , Lesões do Sistema Vascular/etiologiaRESUMO
BACKGROUND: The expected outcome for hormone receptor-positive, node-negative patients should be favorable. However, some patients do develop metastatic disease and the mechanism for this observation is poorly understood. CXCR4 is a chemokine receptor that has been implicated to play a pivotal role in breast cancer growth and metastasis. Its predictive role has not been fully evaluated. We determined to see whether CXCR4 can predict outcome in this subset of patients. METHODS: We accrued and analyzed data from 101 patients with hormone receptor-positive, node-negative breast cancers. The CXCR4 level was detected using Western blots and its level was defined as either low (<6.6-fold) or high (≥6.6-fold). Primary end points were systemic cancer recurrence and death. Statistical analysis performed included Spearman's correlation, Kaplan-Meier survival analysis, and Cox proportional hazard model. RESULTS: Although benign breast tissues had an undetectable level of CXCR4, all 101 cancer specimens had overexpressed CXCR4 (mean 6.4 ± 3.4-fold). There were 79 patients in the low CXCR4 group and 22 patients in the high CXCR4 group. High CXCR4 overexpression was predictive of both cancer recurrence (P = .002) and overall survival (P = .0012). CONCLUSION: High CXCR4 overexpression in primary tumors was predictive of worse outcomes in hormone receptor-positive, node-negative breast cancer patients.
Assuntos
Neoplasias da Mama/mortalidade , Recidiva Local de Neoplasia/etiologia , Receptores CXCR4/fisiologia , Adulto , Idoso , Neoplasias da Mama/química , Intervalo Livre de Doença , Feminino , Humanos , Metástase Linfática , Pessoa de Meia-Idade , Modelos de Riscos Proporcionais , Estudos Prospectivos , Receptor ErbB-2/análise , Receptores CXCR4/análise , Receptores de Estrogênio/análise , Receptores de Progesterona/análiseRESUMO
OBJECTIVE: To examine and report surgical results from a contemporary experience of open abdominal aortic reconstruction in patients with chronic atherosclerotic abdominal aortic occlusion (CAAAO). METHODS: Between January 1999 through May 2010, 54 patients with CAAAO were identified and retrospectively reviewed. CAAAOs were categorized into infrarenal aortic occlusions (IRAOs) and juxtarenal aortic occlusions (JRAOs) based on superior extension of thrombus and requirement for supra-renal aortic clamping to repair. Morbidity, mortality, hospital stay, and operative variables were assessed. The χ2 or Fisher test and the Wilcoxon rank sum test were used to compare demographic and operative variables between two aortic occlusion groups (IRAO and JRAO). Univariate and multivariate analyses were performed to assess factors associated with surgical outcomes and hospital stay. The Kaplan-Meier method was used to calculate survival and patency rates. RESULTS: Fifty patients underwent aortic reconstructions with aorto-bifemoral or iliac bypass, and three underwent a remote axillo-femoral bypass procedure. There were 35 (64.8%) males, and 19 (35.2%) females. Median age was 51.9 years (range, 32-72 years). Of the two CAAAO groups, there were 20 IRAOs and 33 JRAOs. Aorto-renal thromboendartectomy was performed in 26 (49.1%) patients; 26 (75.8%) among JRAOs versus 1 (5%) of IRAOs (P<.01). Proximal aortic clamps were required in 28 (85%) of JRAOs and 3 (15%) of IRAOs (P<.01). Thirty-day and in-hospital mortality was zero. Median length of hospital stay was 7 days (range, 4 to 66 days), and median intensive care unit length of stay was 3 days (range, 1-22 days). Complications included cardiopulmonary dysfunction in four (8%), postoperative renal insufficiency in 10 (18.9%), and other postoperative complications in 15 (28.3%). All 10 with renal insufficiency recovered renal function to baseline creatinine or a creatinine value<1.1 mg/dL. Mean increases in right and left ankle-brachial indicess were 0.54±0.25 and 0.59±0.22, respectively. On univariate analysis, coronary artery disease and African American race were predictors of postoperative complications (P=.048). Age was significantly associated with total complications. Patients with postoperative complications and/or renal insufficiency were older than those without such complications (P=.02) Independent predictors of prolonged hospital stay were intraoperative blood replacement (P=.003), postoperative complications (P<.01), and postoperative renal insufficiency (P<.01). Prolonged intensive care unit stay was predicted by JRAO (P=.04), postoperative complications (P=.02), and postoperative renal insufficiency (P=.013). Survival at 3, 5, and 7 years were 86.6%, 76.5% and 50.9%, respectively. The reduced survival rates were predicted by previous myocardial infarction and existing coronary artery disease (P<.01). CONCLUSION: Abdominal aortic reconstruction is a safe method for treating CAAAO with low associated morbidity and mortality. Aorto-renal thromboendartectomy with supra-renal aortic clamping and aortic replacement remains an effective treatment for those with significant pararenal aortic disease, and can be performed without significant renal impairment.
Assuntos
Aorta Abdominal/cirurgia , Doenças da Aorta/cirurgia , Aterosclerose/cirurgia , Implante de Prótese Vascular , Adulto , Idoso , Aorta Abdominal/fisiopatologia , Doenças da Aorta/mortalidade , Doenças da Aorta/fisiopatologia , Aterosclerose/mortalidade , Aterosclerose/fisiopatologia , Implante de Prótese Vascular/efeitos adversos , Implante de Prótese Vascular/mortalidade , Distribuição de Qui-Quadrado , Doença Crônica , Constrição , Constrição Patológica , Endarterectomia , Feminino , Mortalidade Hospitalar , Humanos , Estimativa de Kaplan-Meier , Tempo de Internação , Modelos Lineares , Modelos Logísticos , Louisiana , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Trombectomia , Fatores de Tempo , Resultado do Tratamento , Grau de Desobstrução VascularRESUMO
Inflammatory aortic aneurysms are unusual vascular lesions and most commonly involve the infrarenal segment of the abdominal aorta. These complex aneurysms represent a challenge to the vascular surgeon and become even more difficult as the extent of the aneurysm and size of the inflammatory mass increase. Although well described, few cases of giant inflammatory aneurysms are reported. In this case, we review the clinical presentation and surgical management of a patient with a giant pararenal abdominal aortic aneurysm and highlight an uncommon morphologic pattern of aortic disease and provide a review of relevant literature.
Assuntos
Aneurisma da Aorta Abdominal/cirurgia , Aortite/cirurgia , Implante de Prótese Vascular , Idoso , Aneurisma da Aorta Abdominal/diagnóstico por imagem , Aortite/diagnóstico por imagem , Aortografia/métodos , Humanos , Masculino , Tomografia Computadorizada por Raios X , Resultado do TratamentoRESUMO
INTRODUCTION: Basal-like tumors or triple negative breast cancers are those that lack hormone-receptor and HER-2 expressions. They are considered to be aggressive tumors, and molecular mechanism to account for this is poorly understood. CXCR4 is a chemokine receptor that has been linked to breast cancer invasion and metastasis. We postulate that high CXCR4 overexpression level in cancer specimens predicts a poor outcome in patients with triple negative breast cancers. METHODS: One hundred fifty-one patients with triple negative breast cancers were prospectively accrued and analyzed. All had undergone standardized treatment and surveillance protocols. From each specimen, CXCR4 levels were detected using Western blots. Results were quantified against 1 microg of HeLa cells (positive controls). CXCR4 expression was defined as high (>or=6-fold) or low (<6-fold). Primary endpoints were cancer recurrence and death. Statistical analysis performed included Kaplan-Meier survival analysis, log-rank test, and Cox proportional hazard model. RESULTS: At a median follow-up of 37 mo, patients whose tumors had high CXCR4 overexpression (>or=6-fold) had a significantly higher incidence of cancer recurrence (P=0.014) and cancer-related death (P=0.026) than those in the low CXCR4 group (<6-fold). After adjusting for tumor size and nodal status, the relative risk for cancer recurrence and death in the high CXCR4 group was 2.1-fold (P=0.007; 95% CI: 1.22 to 3.8) and 2-fold (P=0.047; 95% CI: 1.01 to 4.06) higher than those in the low CXCR4 group, respectively. CONCLUSION: High CXCR4 overexpression in cancer specimens predicts a worse outcome in patients who have triple negative breast cancer.
Assuntos
Neoplasias da Mama/genética , Receptores CXCR4/genética , Biomarcadores/metabolismo , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/metabolismo , Neoplasias da Mama/mortalidade , Neoplasias da Mama/patologia , Intervalo Livre de Doença , Feminino , Perfilação da Expressão Gênica , Regulação Neoplásica da Expressão Gênica , Genes erbB-2 , Células HeLa , Humanos , Metástase Linfática/genética , Metástase Linfática/patologia , Pessoa de Meia-Idade , Invasividade Neoplásica , Metástase Neoplásica , Estadiamento de Neoplasias , Modelos de Riscos Proporcionais , Recidiva , Taxa de Sobrevida , Fatores de Tempo , Resultado do TratamentoRESUMO
BACKGROUND: African American women have a higher breast cancer mortality rate than Caucasian women. To understand this difference, socioeconomic status (SES) needs to be controlled, which can be achieved by evaluating outcome within a population that is underinsured or low SES. We elected to examine the effect of race/ethnicity on outcome of patients with operable breast cancer by evaluating outcome in a population with low SES and similar access to care. METHODS: From a prospective breast cancer database created in 1998, we examined outcome for 786 patients with stage 0 to III breast cancer treated up to September 2008. Patients were treated at Louisiana State University Health Sciences Center in Shreveport and E.A. Conway Hospital and the majority received standard definitive surgery as well as appropriate adjuvant treatment. Primary endpoints were cancer recurrence and death. Statistical analysis performed included Kaplan-Meier survival analysis, log-rank test, Cox proportional hazards model, independent-samples t test, and chi(2) test. P Assuntos
Centros Médicos Acadêmicos/estatística & dados numéricos
, Neoplasias da Mama/etnologia
, Neoplasias da Mama/mortalidade
, Hospitais Públicos/estatística & dados numéricos
, Negro ou Afro-Americano/etnologia
, Antineoplásicos/uso terapêutico
, Neoplasias da Mama/terapia
, Terapia Combinada
, Bases de Dados Factuais
, Feminino
, Humanos
, Estimativa de Kaplan-Meier
, Louisiana/etnologia
, Mastectomia
, Pessoa de Meia-Idade
, Pobreza
, Fatores Socioeconômicos
, Resultado do Tratamento
, População Branca/etnologia
RESUMO
Purpose Patients with locally advanced breast cancer (LABC) have a poor outcome. A molecular predictor to identify at-risk patients is sorely needed. CXCR4 is a chemokine receptor that has been linked to breast cancer invasion and metastasis. We postulate that in patients with LABC, CXCR4 overexpression levels in cancer specimens following neoadjuvant chemotherapy predict cancer outcome. Experimental design 54 patients with LABC were prospectively accrued and analyzed. All had neoadjuvant chemotherapy and definitive surgical therapy. Study homogeneity was maintained by standardized treatment, surveillance, and compliance protocols. A 1 cm(3) cancer from the surgical specimens of each patient was retrieved for analysis. CXCR4 levels were detected using Western blots, and results were quantified against 1 mug of protein from HeLa cells. CXCR4 expression was defined as low (<6.6-fold) or high (> or =6.6-fold). Primary endpoints were cancer recurrence and death. Statistical analysis performed included independent samples t-test, chi-square test, Spearman Rank analysis, Kaplan-Meier survival analysis, log-rank test, and Cox proportional hazard model. Results With a median follow-up of 30 months, patients with high CXCR4 overexpression (> or =6.6-fold) had a significantly higher incidence of recurrence (P = 0.0006) and cancer death (P = 0.0128) than those with low CXCR4 overexpression (<6.6-fold). The relative risks for recurrence and death in the high CXCR4 group were 27.3-fold (95% CI: 6.2-120.8; P = 0.001) and 4.8-fold (95% CI: 1.5-15.0; P = 0.0076) higher, respectively than those in the low CXCR4 group. Conclusion High CXCR4 overexpression in specimens from LABC patients receiving neoadjuvant chemotherapy was predictive of cancer outcome.
Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias da Mama/química , Carcinoma/química , Regulação Neoplásica da Expressão Gênica , Terapia Neoadjuvante , Proteínas de Neoplasias/análise , Receptores CXCR4/análise , Adulto , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/genética , Neoplasias da Mama/patologia , Neoplasias da Mama/terapia , Carcinoma/tratamento farmacológico , Carcinoma/genética , Carcinoma/patologia , Carcinoma/terapia , Terapia Combinada , Ciclofosfamida/administração & dosagem , Progressão da Doença , Doxorrubicina/administração & dosagem , Feminino , Humanos , Pessoa de Meia-Idade , Prognóstico , Estudos Prospectivos , Receptor ErbB-2/análise , Receptores de Estrogênio/análise , Receptores de Progesterona/análise , Risco , Análise de Sobrevida , Resultado do TratamentoRESUMO
BACKGROUND: Tousled-like kinase 1B (TLK1B), a mammalian threonine kinase, facilitates the repair of DNA breaks. Eukaryotic initiation factor 4E (eIF4E) overexpression leads to the upregulation of TLK1B. Doxorubicin, commonly used in the adjuvant setting for breast cancer, causes DNA breaks. We hypothesized that the degree of TLK1B elevation is correlated with eIF4E overexpression and translates clinically to an increased risk for recurrence in breast cancer patients treated with doxorubicin-based adjuvant chemotherapy. STUDY DESIGN: We prospectively accrued 152 patients with stage I to III breast cancer treated with a doxorubicin-based chemotherapy in an adjuvant setting. Standardized treatment and surveillance protocols were used. eIF4E and TLK1B protein levels were quantified using Western blots, and patients were divided into tertiles based on previously reported stratification of eIF4E and TLK1B levels. Primary end points were cancer recurrence and death. Statistical analysis included Spearman's correlation, Kaplan-Meier survival analysis, log rank test, and the Cox proportional hazard model. RESULTS: The degree of TLK1B overexpression was highly correlated with the degree of eIF4E elevation (r=0.25, p=0.0025, Spearman rank correlation). Patients whose tumors were in the highest tertile for eIF4E overexpression had a higher risk for cancer recurrence and cancer death (p=0.015 and 0.049, respectively, log rank test). After adjusting for T-stage, nodal status, age, and estrogen receptor and progesterone receptor status, patients with tumors in the highest tertile of TLK1B overexpression treated with doxorubicin were 1.7-fold more likely to suffer recurrence than those in the low TLK1B group treated similarly (p=0.0078, CI, 1.17 to 2.75, Cox model). CONCLUSIONS: TLK1B overexpression was highly correlated with the level of eIF4E elevation. High TLK1B in cancer specimens was associated with a higher risk for cancer recurrence in patients treated with doxorubicin-based adjuvant chemotherapy.
Assuntos
Antibióticos Antineoplásicos/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/metabolismo , Carcinoma Ductal/tratamento farmacológico , Carcinoma Ductal/metabolismo , Doxorrubicina/uso terapêutico , Fator de Iniciação 4E em Eucariotos/metabolismo , Proteínas Serina-Treonina Quinases/metabolismo , Western Blotting , Neoplasias da Mama/mortalidade , Neoplasias da Mama/patologia , Carcinoma Ductal/mortalidade , Carcinoma Ductal/patologia , Quimioterapia Adjuvante , Distribuição de Qui-Quadrado , Feminino , Humanos , Recidiva Local de Neoplasia , Estadiamento de Neoplasias , Valor Preditivo dos Testes , Modelos de Riscos Proporcionais , Estudos Prospectivos , Medição de RiscoRESUMO
BACKGROUND: The role of whole-body fluorine-18-FDG positron emission tomography (FDG-PET) as an adjunct localize recurrence in stages II and III breast cancer patients who present with clinical suspicion for recurrence is not well established. We report our experience in such a patient population. METHODS: A retrospective review of all patients with stages II and III breast cancer who had a whole-body FDG-PET scan was performed. RESULTS: Of the 23 patients who fit the criteria, 9 had stage II and 14 had stage III breast cancer. Overall sensitivity, specificity, and accuracy were 81%, 100%, and 87%, respectively. Positive and negative predictive values for stages II and III were 100% and 83%, respectively, and 100% and 50%, respectively. FDG-PET detected two recurrences that were missed by conventional imagings, but such recurrences were local and amenable for biopsy. CONCLUSIONS: In patients with stages II and III breast cancer who present with a suspicion for recurrent disease, a whole-body FDG-PET scan may be a useful adjunct in the evaluation of recurrence. However, its added benefit over conventional imaging should be questioned.
Assuntos
Neoplasias da Mama/diagnóstico por imagem , Carcinoma Ductal de Mama/diagnóstico por imagem , Carcinoma Lobular/diagnóstico por imagem , Recidiva Local de Neoplasia/diagnóstico por imagem , Tomografia por Emissão de Pósitrons , Feminino , Fluordesoxiglucose F18 , Humanos , Estadiamento de Neoplasias , Compostos Radiofarmacêuticos , Estudos RetrospectivosRESUMO
The following are excerpts from testimony given in favor of House Bill 849 before the Ways and Means Committee of the Louisiana House of Representatives on June 7, 2005. The bill asked for funding of a time sensitive illness and Homeland Security Emergency System for the State of Louisiana. Bill 849 was defeated by a vote of 9 - 2 in committee but subsequently rudimentary funding was secured in the joint conference committee of the House and Senate by Senate President Dr. Donald Hines. The prophetic poignancy of this plea and of so many other missed opportunities through the years should never be lost on the citizens of Louisiana.
Assuntos
Comunicação , Planejamento em Desastres/legislação & jurisprudência , Serviços Médicos de Emergência/legislação & jurisprudência , Organização do Financiamento , Medidas de Segurança/legislação & jurisprudência , Planejamento em Desastres/economia , Emergências , Serviços Médicos de Emergência/economia , Feminino , Humanos , Louisiana , Masculino , Gestão de Riscos , Medidas de Segurança/economiaRESUMO
OBJECTIVE: In a prospective trial, to determine if eIF4E overexpression in breast cancer specimens is correlated with VEGF elevation, increased tumor microvessel density (MVD) counts, and a worse clinical outcome irrespective of nodal status. SUMMARY AND BACKGROUND DATA: In vitro, the overexpression of eukaryotic initiation factor 4E (eIF4E) up-regulates the translation of mRNAs with long 5'-untranslated regions (5'-UTRs). One such gene product is the vascular endothelial growth factor (VEGF). METHODS: A total of 114 stage I to III breast cancer patients were prospectively accrued and followed with a standardized clinical surveillance protocol. Cancer specimens were quantified for eIF4E, VEGF, and MVD. Outcome endpoints were cancer recurrence and cancer-related death. RESULTS: eIF4E overexpression was found in all cancer specimens (mean +/- SD, 12.5 +/- 7.6-fold). Increasing eIF4E overexpression correlated with increasing VEGF elevation (r = 0.24, P = 0.01, Spearman's coefficient), and increasing MVD counts (r = 0.35, P < 0.0002). Patients whose tumor had high eIF4E overexpression had shorter disease-free survival (P = 0.004, log-rank test) and higher cancer-related deaths (P = 0.002) than patients whose tumors had low eIF4E overexpression. Patients with high eIF4E had a hazard ratio for cancer recurrence and cancer-related death of 1.8 and 2.1 times that of patients with low eIF4E (respectively, P = 0.009 and P = 0.002, Cox proportional hazard model). CONCLUSIONS: In breast cancer patients, increasing eIF4E overexpression in the cancer specimens correlates with higher VEGF levels and MVD counts. Patients whose tumors had high eIF4E overexpression had a worse clinical outcome, independent of nodal status. Thus, eIF4E overexpression in breast cancer appears to predict increased tumor vascularity and perhaps cancer dissemination by hematogenous means.
Assuntos
Neoplasias da Mama/metabolismo , Neoplasias da Mama/patologia , Fator de Iniciação 4E em Eucariotos/biossíntese , Fator A de Crescimento do Endotélio Vascular/biossíntese , Neoplasias da Mama/irrigação sanguínea , Neoplasias da Mama/química , Fator de Iniciação 4E em Eucariotos/análise , Feminino , Humanos , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Prognóstico , Estudos Prospectivos , Fator A de Crescimento do Endotélio Vascular/análiseRESUMO
An incidental finding of focal thyroid uptake (thyroid incidentaloma) from an 18F-fluorodeoxyglucose positron emission tomography (PET) positron presents a diagnostic challenge. We evaluated the incidence of thyroid incidentaloma identified by PET scans and the likelihood of malignancy associated with this finding. Records from all patients from January 1, 2000 to November 30, 2003 who had focal thyroid uptake without any history of thyroid disease were culled. Of the 6241 PET scans performed, focal thyroid uptake was observed in 76 patients (1.2%). Only 14 patients (18%) underwent biopsy. Four of 14 patients (28.6%) had papillary thyroid carcinoma, 7 (50%) had hyperplasia, and 1 each had thyroiditis, nodular goiter, and follicular neoplasm. The incidence of PET thyroid incidentalomas was 1.2 per cent and the incidence of malignancy was 28.6 per cent. Given the high likelihood of malignancy, a further diagnostic workup for surgically fit patients is warranted.
Assuntos
Tomografia por Emissão de Pósitrons , Encaminhamento e Consulta/estatística & dados numéricos , Neoplasias da Glândula Tireoide/diagnóstico por imagem , Adulto , Idoso , Idoso de 80 Anos ou mais , Biópsia por Agulha Fina , Diagnóstico Diferencial , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Reprodutibilidade dos Testes , Estudos Retrospectivos , Fatores de Risco , Neoplasias da Glândula Tireoide/epidemiologia , Neoplasias da Glândula Tireoide/patologiaRESUMO
OBJECTIVE: A previous study of patients with stage I to III breast cancer showed that those patients whose tumors were in the highest tertile of eIF4E overexpression experienced a higher risk for recurrence. This study was designed to determine whether high eIF4E overexpression predicts cancer recurrence independent of nodal status by specifically targeting patients with node-positive disease. METHODS: The prospective trial was designed to accrue 168 patients with node-positive breast cancer to detect a 2.5-fold increase in risk for recurrence. eIF4E level was quantified by Western blots as x-fold elevated compared with breast tissues from noncancer patients. End points measured were disease recurrence and cancer-related death. Statistical analyses performed include survival analysis by the Kaplan-Meier method, log-rank test, and Cox proportional hazard model. RESULTS: One hundred seventy-four patients with node-positive breast cancer were accrued. All patients fulfilled study inclusion and exclusion criteria, treatment protocol, and surveillance requirements, with a compliance rate >95%. The mean eIF4E elevation was 11.0 +/- 7.0-fold (range, 1.4-34.3-fold). Based on previously published data, tertile distribution was as follow: 1) lowest tertile (<7.5-fold) = 67 patients, 2) intermediate tertile (7.5-14-fold) = 54 patients, and 3) highest tertile (>14-fold) = 53 patients. At a median follow up of 32 months, patients with the highest tertile had a statistically significant higher cancer recurrence rate (log-rank test, P = 0.002) and cancer-related death rate (P = 0.036) than the lowest group. Relative risk calculations demonstrated that high eIF4E patients had a 2.4-fold increase in relative risk increase for cancer recurrence (95% confidence interval, 1.2-4.1; P = 0.01). CONCLUSIONS: In this prospective study designed to specifically address risk for recurrence in patients with node-positive breast cancer, the patients whose tumors were in the highest tertile of eIF4E overexpression had a 2.4-fold increase in relative risk for cancer recurrence. Therefore, eIF4E overexpression appears to be an independent predictor of a worse outcome in patients with breast cancer independent of nodal status.
Assuntos
Biomarcadores Tumorais/biossíntese , Neoplasias da Mama/metabolismo , Fator de Iniciação 4E em Eucariotos/biossíntese , Linfonodos , Recidiva Local de Neoplasia , Western Blotting , Neoplasias da Mama/patologia , Neoplasias da Mama/cirurgia , Eletroforese em Gel de Poliacrilamida , Feminino , Seguimentos , Humanos , Incidência , Linfonodos/metabolismo , Linfonodos/patologia , Metástase Linfática , Mastectomia Radical Extensa , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/epidemiologia , Recidiva Local de Neoplasia/metabolismo , Recidiva Local de Neoplasia/patologia , Estadiamento de Neoplasias , Estudos Prospectivos , Fatores de Risco , Taxa de SobrevidaRESUMO
Histoplasmosis is a rare, but important, disease process in patients with the acquired immune deficiency syndrome (AIDS). Initially reported in this patient population in 1982, over 100 cases of histoplasmosis have been reported throughout the United States. Most of these patients present with disseminated disease. Untreated, histoplasmosis will be the direct cause of death in over 80% of patients, but treatment with itraconazole can reduce this mortality to less than 25%. We present two cases of histoplasmosis in AIDS patients presenting as pneumoperitoneum.