Marco Antonio Porto and Paula Arantes Botelho Briglia Habib
Dynamis 2014; 34 (1): 101-123
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1. Introduction
According to the José Alencar Gomes da Silva National Cancer Institute 1
commonly known by its acronym, INCA, cervical cancer is the second
most prevalent form of cancer among women in Brazil, associated with
the deaths of some 4,986 women in 2010 and responsible for 17,540 new
cases in 2012 2. Estimates suggest that the Pap testing of asymptomatic
women between the ages of 25 and 64, followed by treatment of detected
lesions, could reduce the mortality rate by around 80%. This would require a
population screening program and guaranteed follow-up of cases presenting
any level of positive results. In developing nations it is especially common
to offer this screening test only to women who seek out health, while there
is no strategy for ensuring that the most vulnerable women, namely poor
women, will have the test and, if necessary, receive treatment 3.
Population screening requires a structured program of regular testing
of an asymptomatic population displaying greater risk factors in order
to identify precursor or cancerous lesions in their initial stages. To be
effective, such a program must cover at least 70% of the target population
and, according to the World Health Organization (WHO), an expensive,
logistically complex program is only justified if: the type of cancer is
epidemiologically significant, its asymptomatic phase is long enough to allow
for detection, a significant percentage of precursor lesions develop into the
1. Created in Rio de Janeiro in 1937, when the city was federal capital, the Instituto Nacional de
Câncer (INCA) is Brazil’s leading hospital in cancer treatment and in public policy on cancer
control. The country’s 1988 Constitution assigned the institute responsibility for devising a
national cancer control policy, ratified under the Organic Health Law (Lei Orgânica da Saúde,
no. 8080), of 1990. In October 20th of 2011, the institute was rechristened the José Alencar
Gomes da Silva National Cancer Institute in tribute to the former vice-president of Brazil, who
passed away after battling the disease for nearly thirteen years. For further information on
the history of the Institute, see: Teixeira, Luiz Antonio; Fonseca, Cristina Oliveira. De doença
desconhecida a problema de saúde pública: o INCA e o controle de câncer no Brasil. Rio de
Janeiro: Ministério da Saúde; 2007; Teixeira, Luiz Antonio; Porto, Marco; Noronha, Cláudio. O
Câncer no Brasil: passado e presente. Rio de Janeiro: Outras Letras/FAPERJ; 2012.
2. Instituto Nacional de Câncer. Estimativa 2012: incidência de câncer no Brasil. Rio de Janeiro:
INCA; 2011, p. 35.
3. World Health Organization. Early Detection. Cancer control: knowledge into action. WHO
guide for effective programmes, module 3. Geneva: WHO Press, 2007 (updated in Nov 2009.
Available from: http://www.who.int/cancer/modules/en/)