Diffuse large B-cell lymphoma (DLBCL) is the most common type of non-Hodgkin's lymphoma. Although the presence of p53 gene mutations has been considered as a bad prognostic feature in DLBCL, its clinical significance is still controversial. The aims of this study were: detect the presence of mutations in exons 5 to 9 of the p53 gene and correlate it to prognosis in DLBCL. Fifty-one DLBCL patients were enrolled in this study. Expression of p53 was evaluated by immunohistochemistry. The screening of p53 mutations was performed using PCR-SSCP methods. Cases showing a mobility shift on SSCP electrophoresis were analyzed by automatic sequencing. We could identify 8 missense mutations in 6 of 48 cases (12.5%). In addition, we found a known polymorphism at codon 213 and 2 instances of silent mutations. Of all mutations/polymorphisms found, 7 (64%) were localized in codons previously described as p53 hot spots in NHL cases. Of the remaining alterations (4 or 36%), 2 mutations were localized in codons previously described as hot spots for p53 in other tumors and 2 (codon 142 of the exon 5 and codon 195 of the exon 6), in codons not described as hot spots for p53 up to now. The presence of missense mutations in exons 5 to 9 of p53 gene had adverse impact on overall survival (P = 0.020). Cox's Regression Model identified that high-risk International Prognostic Index (IPI) and p53 gene mutations have independent negative impact on OS. Therefore, the association of IPI with cellular factors, such as p53 mutation, can be very helpful in deciding when we should indicate more aggressive therapies in patients with DLBCL, to somehow increase the chance of cure in these patients.

RESUMO.O presente estudo examinou os desafios psicológicos de adolescentes com fibrose cística (FC) no Brasil, por meio de uma entrevista semiestruturada com perguntas abertas : [(i) Como é ter FC para você?; (ii) Você tem necessidades especiais por ter FC?; (iii) Como você vê o seu futuro?] Foi realizada a entrevista com 42 adolescentes com FC. Foi investigado como os adolescentes lidam com a FC, identificado suas necessidades, e como eles vislumbram o futuro. Os resultados mostram que as emoções dos adolescentes incluíam medo da morte, vergonha e raiva. Outras preocupações incluíam a perda da liberdade, ficando com atraso na escola, perda de amigos, da igualdade e aceitação, e as perspectivas futuras. Esses sentimentos e preocupações foram influenciados pela doença. Há poucos estudos que examinaram ajuste dos adolescentes ao convívio com a FC na América do Sul. Assim, buscamos compreender como é viver com uma doença crônica na adolescência; como isso pode contribuir para novas intervenções psicológicas para pacientes e familiares; estimular novas pesquisas, e auxiliar os profissionais de saúde nos cuidados específicos aos adolescentes com FC. Palavras-chave: Doenças crônicas; fibrose cística; emoções. LIVING WITH CYSTIC FIBROSIS: THE PERSONAL BRAZILIAN ADOLESCENT VIEWABSTRACT. The present study examined the psychological challenges of adolescents with cystic fibrosis (CF) in Brazil. A semi-structured interview with open-ended questions [(i) What is it like for you to have CF?; (ii) Do you have any special needs because you have CF? (iii) How do you envision your future?] was conducted with 42 CF adolescents' patients. We investigated how adolescents faces CF, identif ied their needs, and how they envision the future. The results show that the adolescents' emotions included fear of death, embarrassment, and anger. Other concerns included the loss of freedom, falling behind at school, a loss of friends, equality and acceptance, and the future perspectives. These feelings and concerns were influenced by the disease and may affect coping with CF. Few studies have examined adolescents' adjustment to living with CF in South America; understanding how to live with CF in adoles cence contributes to new psychological interventions for patients and families, stimulate new research, and assist healthcare professionals and others who work and care specific to CF adolescents.