Segundo tumor primário, radioinduzido, em pacientes com neoplasias de próstata, após radioterapia

• Autor(a) principal: Lourenço, Paulo Roberto de [UNESP]
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/110670
• topic: Próstata - Tumores; Radioterapia; Cancer; Radiação - Efeito fisiologico; Prostate

Introduction: According to the National Cancer Institute ( INCA )- Ministry of Health, Brazil, prostate cancer is the second most common among men, first we have the non-melanoma skin cancer. In absolute terms, it is the sixth most common type in the world, accounting for about 10% of all cancers. Treatment protocols, radiotherapy is indicated in several situations. There are several mechanisms by which radiation can induce genetic changes and lead to malignant transformation, this induction have been proposed, but the exact development of radiation -induced cancer is still uncertain. Objective: A second primary tumor may appear within the field of post irradiation treatment, and thus this study aims to determine the percentage of incidence of a second primary tumor radiation induced. Method: This study was conducted at Hospital Amaral Carvalho, by collecting data from 3,114 records in patients with prostate cancer, in a 10-year period (1997-2007). To evaluate the association between variables was used the Kaplan- Meier curves for time to study the occurrence of second primary tumor. There was no control group as a comparison method. Results: Of 3,114 records evaluated, only 70 received radiotherapy. After descriptive analysis, the variables were presented as graphs, it was concluded that the rate of radiation induced tumor is 0.38%, showing that treatment with ionizing radiation is safe