Title: What are the variables responsible for the drop in the estimate of oral cancer in the State of Parana - Brazil in the period from 2020 to 2022
Abstract:
Our experience of 30 years of research in the area of oral cancer in the State of Paraná-Brazil(SP-B)teaches us that prevention and information are the only ways to reduce oral cancer. We observed a high rate of lip lesions of solar etiology and lesions of the oral mucosa (mainly in patients who drink alcohol and use tobacco). The patients in a study in tne SP-B from 1989 to 1997 were referred to a questionary with 105 sections to profile then. Only were including the patients above 30 years old. The clinical examination of the mouth was realized searching for lesions(SASSI et al 1997).Another study(SASSI et al 1997) shows 3.134 clinical oral examinations, being found 443 lesions (14.1%); traumatic 47.6%, inflammatory II, 21.2%, inflammatory 20.8%, malignant aspects 5.6%, leukoplakia 4.33, cysts 0.4%. We performed biopsies in 25 lesions(5.6%), finding 3 cases of neoplasms(12.0%). In the year 2000, a pre-screening center for oral injuries was created in Curitiba where, in 31 months, 1.316 patients were enrolled, with 37 confirmed tumors(MIYACHI; SASSI; etal, 2002). In order to stimulate prevention, professionals from all over the State of Paraná received training to assist patients in a single day of 2002 on oral cancer prevention. RESULTS: Of 7.638 clinical exams, with 1.522 injuries(22.6%). (SASSI et al 2008, July). The health actions received a sequence in which the authors (SASSI et al 2008, August) appoint 8,668 oral examinations performed in 20 municipalities in Paraná from 1989 to 2007. 18.0% have never heard about oral cancer prevention. The 1.410(16.27%) injuries: 1.280 were oral and other skin injuries. 65 cases of lesions suggestive of cancer (5.1%). 42 biopsied and 5(12.5%) diagnosed with cancer. Continuing the study, authors(SASSI, et al; 2014), in an analysis of harmful habits to health, showed that 843(22.59%) were smokers and 578(15.49%) used alcohol, among the 22.300 patients evaluated in 25 years of oral cancer prevention campaigns in the State of Paraná. The National Cancer Institute(INCA), in 2006,estimated 820 new cases of oral cancer in Paraná for men and 260 for women.The Brazilian estimate: 10.380 for men and 3.780 women. INCA announces the 2012 estimate of 14.170 new cases, 9.990 for men and 4.180 for women. In our country, the data continues to grow, as shown by the estimate for 2016/2017, with 15.490 cases of oral cancer, 11.140 in men and 4.350 in women. These values correspond to an estimated risk of 11.27 new cases for every 100 thousand men and 4.21 for every 100 thousand women. In Paraná: Men-930 cases and Women-190 cases. The years go by and new INCA estimates appear in 2018/2019, with the presence of 11.200 new cases for men and women with 3.500. In the SP-B, the estimate is 910 for men and 220 women. INCA2020: we observed an estimated regression of oral cancer, an example for men in Brazil: 11.180(11.200) and women 4.010(3.500). In the SP-B for 680 men(910) and 230(220) women new cases. Preventive actions for oral cancer are the key to success.
