Breast cancer

Breast cancer is defined as abnormal cell growth, most often in the ducts or lobules of breast tissue. Most commonly found in women, it can develop in the breast tissue of men. One in nine women in Canada are expected to develop breast cancer in their lifetime.

• by geographic area
• by Greater Sudbury and outlying areas
• by age
• deaths by geographic area

Breast cancer by geographic area

Key findings:

• In the Sudbury & District Health Unit (SDHU) area, there were 154 cases of breast cancer in females in 2009.
• In 2009, the rate of female breast cancer in the SDHU area was 108 cases per 100,000 females.
• The annual breast cancer rate in SDHU area and northeastern Ontario females have been similar and are generally lower than the breast cancer rate in Ontario females.
• There was no clear trend in breast cancer rates in SDHU area females between the years of 2000 and 2009.

Notes:

• Rates are age-standardized using the 1991 Canadian population.
• Data Source: Ontario Cancer Registry and Population Estimates, Cancer Care Ontario, SEER*Stat, Oct. 2012 release.

Figure: Annual age-standardized incidence rate, breast cancer, females, by geographic area, 2000–2009

Table: Annual age-standardized incidence rate, breast cancer, females, by geographic area, 2000–2009

Geographic Area	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009
SDHU	90.5	84.1	110.8	87.4	88.8	104.8	76.6	105.1	77.3	108.3
Northeast Ontario	102.5	89.1	105.3	85.5	101.0	97.9	88.9	102.2	90.7	100.5
Ontario	102.5	102.5	105.0	99.1	100.2	100.5	99.4	100.9	97.4	99.8

Table: Annual number of cases, breast cancer, females, by geographic area, 2000–2009

Geographic Area	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009
SDHU	111	106	144	116	119	145	106	146	112	154
Northeast Ontario	377	335	407	337	398	400	364	424	383	424
Ontario	7097	7260	7625	7377	7676	7831	7955	8228	8136	8495

Breast cancer by Greater Sudbury and outlying areas

Key findings:

• In 2009, there were 125 cases of breast cancer among female residents of Greater Sudbury and 29 cases among female residents of the SDHU district office areas.
• The rate of female breast cancer among residents of Greater Sudbury was 105 cases per 100,000 females, and the rate among residents of the SDHU district office areas was 131 cases per 100,000 females.
• The rates of breast cancer among female residents of Greater Sudbury and the SDHU district office areas have fluctuated between 2000 and 2009 without a clear trend.

Notes:

• Rates are age-standardized using the 1991 Canadian population.
• Data Source: Ontario Cancer Registry and Population Estimates, Cancer Care Ontario, SEER*Stat, Oct. 2012 release.

Figure: Annual age-standardized incidence rate, breast cancer, females, Greater Sudbury vs. Sudbury & District Health Unit (SDHU) district office areas, 2000–2009

Table: Annual age-standardized incidence rate, breast cancer, females, Greater Sudbury vs. Sudbury & District Health Unit (SDHU) district office areas, 2000–2009

Census Division	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009
SDHU District Office Areas	64.8	104.0	89.9	94.6	86.5	112.9	92.5	63.7	97.2	130.6
City of Greater Sudbury	95.9	80.1	115.8	85.7	88.8	102.9	73.1	114.5	73.1	105.2

Table: Annual number of cases, breast cancer, females, Greater Sudbury vs. Sudbury & District Health Unit (SDHU) district office areas, 2000–2009

Census Division	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009
SDHU District Office Areas	15	23	22	24	23	30	25	17	26	29
Manitoulin District	7	11	6	11		12	11		7	12
Sudbury District	8	12	16	13	18	18	14	12	19	17
City of Greater Sudbury	96	83	122	92	96	115	81	129	86	125

Breast cancer by age

Key findings:

• In the SDHU area, the highest number of female breast cancer cases were in 45 to 64 year age group, which had 77 new cases in 2009.
• The highest rate of breast cancer in 2009 in SDHU area females was in the 65–74 and 75 and over age group, with rates of 320 and 323 new cases per 100,000 females, respectively.
• The rate of breast cancer generally increases with age.
• Between 2000 and 2009, the breast cancer rates in the SDHU area have remained stable, despite wide fluctuations seen year to year in the two oldest age groups.

Notes:

• Data Source: Ontario Cancer Registry and Population Estimates, Cancer Care Ontario, SEER*Stat, Oct. 2012 release.

Figure: Annual age-standardized incidence rate, breast cancer, females, by age group, Sudbury & District Health Unit (SDHU) area, 2000–2009

Table: Annual age-standardized incidence rate, breast cancer, females, by age group, Sudbury & District Health Unit (SDHU) area, 2000–2009

Age at Diagnosis	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009
20-44	36	32.7	39.8	20.2	34.2	31.2	26.6	39.2	24.5	53.7
45-64	212	187	246.7	198.9	236.5	242.8	169.7	249	194.9	254.4
65-74	307.9	333.5	344.2	332.5	204.2	371.4	326.2	379.9	291.1	319.5
75+	292.5	249.7	499.3	388.7	323.8	422.4	226.3	317.4	206.3	323.3

Table: Annual number of case, breast cancer, females, by age group, Sudbury & District Health Unit (SDHU) area, 2000–2009

Age at Diagnosis	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009
20-44	15	14	17	8	13	13	11	14	10	19
45-64	52	48	64	53	65	68	48	73	58	77
65-74	25	27	28	27	17	32	29	33	26	29
75+	19	17	35	28	24	32	18	26	18	29

Breast cancer deaths by geographic area

Key findings:

• In the SDHU area, there were 43 deaths among women due to breast cancer in 2009.
• In 2009, the rate of breast cancer mortality in the SDHU area was 15 deaths per 100,000 females.
• The annual female breast cancer rates in the SDHU area, northeastern Ontario and Ontario have generally been similar.
• Between 2000 and 2009, the rate of female breast cancer mortality in the SDHU area has been fairly stable.

Notes:

• Rates are age-standardized using the 1991 Canadian population.
• Data Source: Ontario Cancer Registry and Population Estimates, Cancer Care Ontario, SEER*Stat, Oct. 2012 release.

Figure: Annual age-standardized mortality rate, breast cancer, by geographic area, 2000–2009

 

Table: Annual age-standardized mortality rate, breast cancer, by geographic area, 2000–2009

Geographic Area	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009
SDHU	27.4	21.2	17.1	22.8	25.9	19.1	20	24.1	16.6	25.9
Northeast Ontario	26.6	22.5	20.2	25.4	22.5	26.3	21.5	22.1	22.1	22.2
Ontario	26.2	24.9	24.5	23.8	23.8	23.4	21.4	22.2	20.8	20.3

Table: Annual number of cases of mortality, breast cancer, by geographic area, 2000–2009

Geographic Area	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009
SDHU	35	28	22	30	36	28	29	37	25	42
Northeast Ontario	103	91	77	102	94	116	94	98	100	108
Ontario	1920	1869	1886	1886	1941	1965	1839	1951	1888	1885

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This item was last modified on March 26, 2018