ABSTRACT
Estudo descritivo com abordagem quantitativa objetivou identificar a prevalência de exames preventivos de câncer de próstata em homens acima de 40 anos de idade, residentes em uma comunidade no interior de Videira - Santa Catarina. Toda a população da comunidade foi mapeada, totalizando 210 indivíduos e destes, 70 homens que se enquadraram nos critérios de inclusão. Os dados foram coletados por meio de questionário. Constatou-se que 61,8% dos homens conhecem os exames de prevenção do câncer de próstata; 41,1% realizam os exames e 58,9% não realizam, justificando a falta de conhecimento, não julgar necessário e não apresentar sintomas. Foi possível traçar um plano de ações educativas na comunidade acerca do câncer de próstata, sugerindo maior atenção na abordagem à saúde da população masculina.
Estudio descriptivo con abordaje cuantitativo cuya finalidad fue identificar la prevalencia de exámenes preventivos de cáncer de próstata en hombres de más de 40 años de edad, residentes en una comunidad en el interior de Videira - Santa Catarina. Toda la población de la comunidad fue mapeada, totalizando 210 individuos y de estos, 70 hombres que se encuadraran en los criterios de inclusión. Los datos fueron obtenidos por medio de cuestionario. Se constató que 61,8% de los hombres conocen los exámenes de prevención del cáncer de próstata; 41,1% realizan los exámenes y 58,9% no realizan justificando la falta de conocimiento, no juzgar necesario y no presentar síntomas. Fue posible trazar un plan de acciones educativas en la comunidad acerca del cáncer de próstata, sugiriendo más atención en el abordaje a la salud de la población masculina.
This descriptive study with a quantitative approach aimed to identify the prevalence of preventive tests for prostate cancer in men aged over 40 years old, resident in the community of Videira in the interior of the State of Santa Catarina. The whole population of the community was mapped, totalling 210 individuals; of these, 70 men met the inclusion criteria. The data were collected using a questionnaire. It was determined that 61.8% of the men knew about the tests for preventing prostate cancer; 41.1% had undertaken the tests and 58.9% had not, stating the cause to be lack of knowledge, not considering it to be necessary, and not presenting symptoms. It was possible to outline a plan of educational actions in the community regarding prostate cancer, suggesting greater attention in the approach to the health of the male population.
Subject(s)
Humans , Male , Early Diagnosis , Prostatic Neoplasms , Men's HealthABSTRACT
PURPOSE: The goal of this study is to determine whether the magnitude of overlap between planning target volume (PTV) and rectum (Rectumoverlap) or PTV and bladder (Bladderoverlap) in prostate cancer volumetric-modulated arc therapy (VMAT) is predictive of the dose-volume relationships achieved after optimization, and to identify predictive equations and cutoff values using these overlap volumes beyond which the Quantitative Analyses of Normal Tissue Effects in the Clinic (QUANTEC) dose-volume constraints are unlikely to be met. MATERIALS AND METHODS: Fifty-seven patients with prostate cancer underwent VMAT planning using identical optimization conditions and normalization. The PTV (for the 50.4 Gy primary plan and 30.6 Gy boost plan) included 5 to 10 mm margins around the prostate and seminal vesicles. Pearson correlations, linear regression analyses, and receiver operating characteristic (ROC) curves were used to correlate the percentage overlap with dose-volume parameters. RESULTS: The percentage Rectumoverlap and Bladderoverlap correlated with sparing of that organ but minimally impacted other dose-volume parameters, predicted the primary plan rectum V45 and bladder V50 with R(2) = 0.78 and R(2) = 0.83, respectively, and predicted the boost plan rectum V30 and bladder V30 with R(2) = 0.53 and R(2) = 0.81, respectively. The optimal cutoff value of boost Rectumoverlap to predict rectum V75 >15% was 3.5% (sensitivity 100%, specificity 94%, p 10% was 5.0% (sensitivity 83%, specificity 100%, p < 0.01). CONCLUSION: The degree of overlap between PTV and bladder or rectum can be used to accurately guide physicians on the use of interventions to limit the extent of the overlap region prior to optimization.