Incidence rates of ovarian cancer
Ovarian
cancer is the eighth most common cancer in Australian females and the
second most commonly diagnosed gynaecological cancer after uterine cancer.
Approximately
1,580 Australian women are expected to be diagnosed with ovarian
cancer in 2017, accounting for 2.5% of all new female cancer cases.
The estimated age-standardised incidence rate for 2017 is 10.8 cases
per 100,000 females, up from 10.6 cases per 100,000 females in 2013
(Figure 1). The majority of these women diagnosed are likely
to be diagnosed with an advanced stage of disease as early-stage
ovarian cancer often does not present with symptoms.
The
risk of ovarian cancer increases with age up until the age group 70 –
95+ where the incidence begins to decrease. The average age at
diagnosis is 63 years, with a 1 in 122 risk of developing ovarian
cancer before the age of 75, and a 1 in 81 risk before the age of 85.
Figure 1: Estimated
incidence rates and mortality rates for ovarian cancer in 2017
Mortality
rates for ovarian cancer
Ovarian
cancer is the sixth most common cause of cancer death amongst
Australian women, with an estimated 1,047 deaths (accounting for 5.1%
of all female cancer deaths) expected in 2017. The age-standardised
rate (ASR) for mortality was 6.8 deaths per 100,000 cases in 2014, a
decrease from 9.3 deaths per 100,000 females in 1968 (Figure 1).
The 5
year survival rate between 2009-2013 was 44.4%, up from 34.1% between
1984-1988 (Figure 2). The prognosis (outlook for survival)
depends on the type and stage of cancer at diagnosis as well as
general health. Where ovarian cancer is diagnosed early, over 80% of
women are likely to survive for over 5 years, however only
approximately 30% of women diagnosed at advanced stages will survive
for more than 5 years.
Figure 2: 5-year
relative survival from ovarian cancer
Resources
Cancer
in Australia 2017
Summary
of AIHW Cancer in Australia 2017 report
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