Cancer incidence in eighteen cities of the State of São Paulo, Brazil

Abstract

ObjectiveAs in Brazil cancer registries are mostly based on large cities, there are no estimates per state or per region and information on the disease incidence in the vast in-land areas is very scarce. An incidence survey was conducted in 18 major cities of the state of São Paulo, excluding the capital, aiming to collect information about cancer incidence in the state of São Paulo. MethodsOf the 18 cities in state of São Paulo included in the survey, all had available resources for cancer management. Data from the year of 1991 were collected by the personnel of the Instituto Brasileiro de Geografia e Estatística (Brazilian Institute of Statistics), who were especially trained by the study coordinators at the Fundação Oncocentro de São Paulo (Cancer Center of São Paulo). The collected data were processed and analyzed at the Oncocentro. Data collection, processing, and analyses were performed according to the recommendations of the International Agency for Research on Cancer. Results Although some discrepancies were observed in cancer incidence rates between the cities, results obtained for all 18 cities combined were remarkably close to those recently found for the city of São Paulo in the year 1993. One remarkable finding was the relatively high cancer incidence rates in both sexes in the city of Santos. ConclusionsThe very similar all-sites cancer incidence rates found in the year 1991, when compared to those for the city of São Paulo in the year 1993, are suggestive that all regions have common cancer-related factors. Nevertheless, other explanations, such as the inclusion in the study of prevalent cases, as well as of non-residents, may have occurred in both studies, biasing the results. There is a need of further studies to confirm the high cancer incidence in Santos. !$!Rev Saúde Pública 2001;35(4):362-7 www.fsp.usp.br/rsp Cancer incidence in São Paulo cities Andreoni GI et al

Symptoms of depression in patients with cancer of the head and neck undergoing radiotherapy treatment: a prospective study

“…Preto which presented laryngeal cancer as one of the most common, with an incidence rate of 23.1% (14) . The sample of the present study included patients from the region of Ribeirão Preto (82.8%) with the occupation of farm workers (21.9%).…”

Growing incidence of thyroid carcinoma in recent years: Factors underlying overdiagnosis

“…As the registries become more inclusive, information from nonreference centers, in which less advanced cases were treated, could artificially increase the incidence of low-risk tumors. 109 Methods of analysis of epidemiological data may also contribute to the increase. Some studies have demonstrated that data analyzed with newer methods can artificially increase the incidence.…”

“…Most cancer registries initially collected information from large reference centers. As the registries become more inclusive, information from nonreference centers, in which less advanced cases were treated, could artificially increase the incidence of low‐risk tumors …”

Tendência da mortalidade por câncer do útero no Município de São Paulo entre 1980 e 1999

“…As três cidades incluídas -Belém, Goiânia e Po rto Alegre -estão ent re os 20 re g i s t ros com maiores incidências de câncer de colo uteri n o, sobretudo Belém, com 64,5 (2 o ), e Goiânia, com 37,1 (6 o ) (taxas ajustadas por idade por 100 mil mulheres). No Estado de São Pa u l o, estudo de incidência abra ngendo 18 cidades do interi o r, enfocando o ano de 1991, constatou que o câncer do colo do ú t ero era o segundo mais incidente em mulhere s, e xcluindo-se o câncer de pele 3 .…”