ABSTRACT
Abstract Introduction The prevalence of oropharyngeal squamous cell carcinoma (OSCC) related to Human Papillomavirus (HPV) is rising in the whole world. Objective To access the prevalence and temporal trend of HPV infection in oropharyngeal cancer by analyzing the expression of the p16 protein. Methods We conducted a transversal study in a Brazilian reference oncology center. The sample consisted of 254 patients with OSCC. The analyzed period was from 2013 to 2017. All patients underwent p16 immunohistochemistry analysis. Results The overall prevalence of HPV-related OSCC was of 31.9%. During the analyzed period, we observed a trend of increasing rates of OSCC that marked positive for p16 immunohistochemistry. The annual prevalence of p16-positive cases was of 20.6% in 2013, 23.9% in 2014, 33.3% in 2015, 38.3% in 2016, and 34.2% in 2017. Most of the patients were stage III and IV (84%). Female patients (odds ratio [OR] = 2.43; 95% confidence interval [CI]: 1.003-5.888; p = 0.049) and younger patients (OR = 2.919; 95%CI: 1.682-5.067; p < 0.005) were associated with a higher risk of HPV-related OSCC. Tobacco consumption had a proportional lower risk of HPV-related OSCC (OR = 0.152; 95%CI: 0063-0.366; p < 0.005). Conclusion We observed an increasing prevalence of HPV-related OSCC in a specialized cancer hospital in Brazil.
ABSTRACT
Background Peptic ulcer etiology has been changing because of H. pylori decline. Objectives To estimate peptic ulcer prevalence in 10 years-interval and compare the association with H. pylori and use of non-steroidal anti-inflammatory drugs. Methods Records assessment in two periods: A (1997-2000) and B (2007-2010), searching for peptic ulcer, H. pylori infection and non-steroidal anti-inflammatory drugs use. Results Peptic ulcer occurred in 30.35% in A and in 20.19% in B. H. pylori infection occurred in 73.3% cases in A and in 46.4% in B. Non-steroidal anti-inflammatory drugs use was 3.5% in A and 13.3% in B. Neither condition occurred in 10.4% and 20.5% in A and B respectively. Comparing both periods, we observed reduction of peptic ulcer associated to H. pylori (P=0.000), increase of peptic ulcer related to non-steroidal anti-inflammatory drugs (P=0.000) and idiopathic peptic ulcer (P=0.002). The concurrent association of H. pylori and non-steroidal anti-inflammatory drugs was also higher in B (P=0.002). Rates of gastric ulcer were higher and duodenal ulcer lower in the second period. Conclusions After 10 years, the prevalence of peptic ulcer decreased, as well as ulcers related to H. pylori whereas ulcers associated to non-steroidal anti-inflammatory drugs increased. There was an inversion in the pattern of gastric and duodenal ulcer and a rise of idiopathic peptic ulcer. .
Contexto A etiologia da úcera péptica vem apresentando mudanças devido à redução da infecção pelo H. pylori. Objetivos Estimar a prevalência da úlcera péptica em dois períodos com intervalo de 10 anos e comparar a associação com a infecção pelo H. pylori com o uso de anti-inflamatórios não esteroides. Métodos Revisão de prontuários em dois períodos: A (1997-2000) e B (2007-2010), com busca por úlcera péptica, H. pylori e uso de anti-inflamatórios não esteroides (AINE). Resultados Úcera péptica apresentou frequência de 30,35% em A e 20,19% em B. Infecção por H. pylori ocorreu em 73,3% em A e em 46,4% em B. Uso de anti-inflamatórios não esteroides ocorreu em 3,5% em A e em 13,3% em B. Nenhuma dessas condições esteve associada em 10,4% e 20,5% das úlceras em A e B, respectivamente. Comparando os dois períodos, houve redução da úlcera péptica associada à H. pylori (P=0,000), aumento das úlceras associadas ao uso de anti-inflamatórios não esteroides (P=0,000) e aumento de úlceras idiopáticas (P=0,002). A associação concomitante de H. pylori e anti-inflamatórios não esteroides foi também mais alta em B (P=0,002). Úlceras gástricas aumentaram e úlceras duodenais diminuíram em B. Conclusões No intervalo de 10 anos, a prevalência de úlcera péptica diminuiu assim como as úlceras relacionadas com H. pylori e houve um aumento das úlceras associadas ao uso de anti-inflamatórios não esteroides. Houve inversão na frequência das lesões gástricas e duodenais e aumento da prevalência da úlcera idiopática. .