Trends in the Mortality (1950–1997) and Incidence (1975–1993) of Malignant Ovarian Neoplasm among Japanese Women: Analyses by Age, Time, and Birth Cohort

Koji, Takehiko; Kondo, Takaaki; Yatsuya, Hiroshi; Hori, Yoko; Kikkawa, Fumitaka; Toyoshima, Hideaki

doi:10.1006/gyno.2001.6335

Cited by 20 publications

(22 citation statements)

References 34 publications

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“…The incidence rate of ovarian cancer has increased during the last few decades in Japan, 13,14) while the relative 5-year survival has remained approximately constant at a little less than 40%. 2) There are increasing demands for improvement in the treatment of ovarian cancer patients.…”

Section: Discussionmentioning

confidence: 99%

Influence of hospital procedure volume on ovarian cancer survival in Japan, a country with low incidence of ovarian cancer

et al. 2004

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The survival of ovarian cancer patients has been reported to be superior at hospitals with a high volume of operations. A population-based study was carried out to assess whether this is true in Japan, where the incidence rate is relatively low as compared with other developed countries. The Osaka Cancer Registry's data were used to investigate associations between hospital procedure volume and survival of ovarian cancer patients. Hospitals were ranked according to the number of operations for ovarian cancer performed per year (high/medium/low/very low varian cancer is the leading cause of death among gynecologic malignancies in the developed countries, and fewer than half of women diagnosed with ovarian cancer survive 5 years after diagnosis. In Japan, the incidence rate of ovarian cancer is relatively low as compared with other developed countries (i.e., Nordic nations, the United Kingdom, and North America), 1) while the relative 5-year survival for ovarian cancer is less than that in the US (36.4% vs. 43.5%).2)The standard treatment of ovarian cancer is cytoreductive surgery followed by combination chemotherapy. Initial surgery is important for accurate staging of the disease and for removing as much of the tumor as possible. Former reports suggest that one of the prognostic factors predicting survival is the diameter of the residual tumor mass after operation, 3,4) so it has been suggested that the initial operation provides the most important opportunity to improve survival.5) The question arises, are lower survival rates in Japan, where the incidence rate of ovarian cancer is low, associated with poor technical expertise of physicians and of the teams performing primary surgery?Relative 5-year survival for malignant ovarian germ cell tumors in Japan is also much lower than that in the US (58.6% vs. 83.7%).2) Similar differences were observed between Japan and the US in survival for malignant testicular germ cell tumors.6) Malignant ovarian germ cell tumors are rare compared with testicular germ cell tumors. Most of the advances in the management of the former have been extrapolations from experience with the latter, and developments in surgery and of effective chemotherapy regimens have markedly improved the outcome of treatment of ovarian germ cell tumors.7, 8) Lower availability of medical oncologists than in the US might have adversely influenced the 5-year survival of both types of germ cell tumor patients in Japan.In this paper, using the Osaka Cancer Registry's data, we have tried to clarify whether increased hospital procedure volume (i.e., the number of operations performed for ovarian cancer) is associated with increased survival in Japan, and whether centralizing operative treatment for ovarian cancer might improve survival. The quality of this data, therefore, can be assumed to have met the standards set by the International Association of Cancer Registries during the last 3 decades. In 1993-1997, the proportion of death certificate only (DCO) cases was 16%, the mortality to incidence (M/I) rat...

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Section: Discussionmentioning

confidence: 99%

Influence of hospital procedure volume on ovarian cancer survival in Japan, a country with low incidence of ovarian cancer

et al. 2004

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“…10) Tamakoshi et al 4) have reported a rise in incidence in Japan from 1975 to 1993. Our present study showed that there has been a rising pattern only in the incidence rate of carcinoma (from 3.4 to 4.8 per 100 000 women).…”

Section: Discussionmentioning

confidence: 99%

“…7,8) The effect of age on the incidence of ovarian cancer agreed well with that found in previous studies in Japan: the rates increased steadily in older age groups. 4,5) Histologic diversity is, however, characteristic of this cancer and a population-based study with respect to histologic type of ovarian cancer has never been reported in Japan. In this paper we have tried to clarify the analysis of incidence and survival of ovarian cancer by histologic type, using the Osaka Cancer Registry's data.…”

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Ovarian cancer incidence and survival by histologic type in Osaka, Japan

et al. 2003

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“…Population * Ferlay et al, 2010 2008 World U.S. Cancer Statistics Working Group, 2010Group, 2007 United States (99.1%) Koper et al, 19961989-1991Netherlands Ioka et al, 20031975-1998 Osaka, Japan Mahdy et al, 19991988-1997Alexandria, Egypt Zambon et al, 20041986-1997 Several regions in Italy Kohler et al, 2011Rates: 2003-2007Trends: 1998Trends: -2007 United States (93%) Tamakoshi et al, 2001Tamakoshi et al, 1975Tamakoshi et al, -1993 Several regions in Japan Jin et al,19931979-1989Shanghai, China Dey et al, 20101999-2002Tanta, Egypt Minelli et al, 20071998-2002 Umbria, Italy 1992-1997 United States (52%) Goodman et al, 1992Goodman et al, -1997 United States (52%) Boger-Megiddo & Weiss, 20051992-2000 United States (26%) Stiller, 2007NR World Brookfield et al, 20091973-2005 United States (9%) Poynter et al, 2010Poynter et al, 1975Poynter et al, -2006 United...…”

Section: Author and Publication Year Data Year(s)mentioning

confidence: 99%

“…The reasons for this decrease are unclear, but are likely not artefactual due to the long-standing high-quality data available for the United States. A Japanese analysis based on data from several regional cancer registries reported a 1.5 fold increase in ovarian cancer rates from 1975 to 1993 (Tamakoshi et al, 2001). The Chinese Shanghai Cancer Registry also reported an increase in ovarian cancer incidence from 1979-1989(Jin et al, 1993.…”

Section: Author and Publication Year Data Year(s)mentioning

confidence: 99%

Ovarian Cancer Incidence: Current and Comprehensive Statistics

Stewart¹

2012

Ovarian Cancer - Clinical and Therapeutic Perspectives

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Trends in the Mortality (1950–1997) and Incidence (1975–1993) of Malignant Ovarian Neoplasm among Japanese Women: Analyses by Age, Time, and Birth Cohort

Cited by 20 publications

References 34 publications

Influence of hospital procedure volume on ovarian cancer survival in Japan, a country with low incidence of ovarian cancer

Influence of hospital procedure volume on ovarian cancer survival in Japan, a country with low incidence of ovarian cancer

Ovarian cancer incidence and survival by histologic type in Osaka, Japan

Ovarian Cancer Incidence: Current and Comprehensive Statistics

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