Five-year Breast Cancer Incidence by Stage at Diagnosis
Michigan Female Residents, 1985-2020

Year of Diagnosis	Total	In Situ		Localized		Regional		Distant		Unknown
		Number	Percent	Number	Percent	Number	Percent	Number	Percent	Number	Percent
2016-2020	48,963	9,406	19.2	26,539	54.2	9,870	20.2	2,259	4.6	889	1.8
2015-2019	49,450	9,592	19.4	26,452	53.5	10,151	20.5	2,272	4.6	983	2.0
2014-2018	48,968	9,717	19.8	25,772	52.6	10,173	20.8	2,242	4.6	1,064	2.2
2013-2017	48,623	9,882	20.3	25,106	51.6	10,317	21.2	2,250	4.6	1,068	2.2
2012-2016	48,665	9,885	20.3	25,010	51.4	10,478	21.5	2,269	4.7	1,023	2.1
2011-2015	48,222	9,961	20.7	24,582	51.0	10,467	21.7	2,277	4.7	935	1.9
2010-2014	47,535	9,959	21.0	23,965	50.4	10,416	21.9	2,274	4.8	921	1.9
2009-2013	47,377	9,977	21.1	23,752	50.1	10,456	22.1	2,278	4.8	914	1.9
2008-2012	46,363	9,810	21.2	22,970	49.5	10,285	22.2	2,211	4.8	1,087	2.3
2007-2011	45,763	9,841	21.5	22,424	49.0	10,122	22.1	2,133	4.7	1,243	2.7
2006-2010	45,305	9,838	21.7	21,843	48.2	10,171	22.5	2,014	4.4	1,439	3.2
2005-2009	45,120	9,734	21.6	21,661	48.0	10,164	22.5	1,925	4.3	1,636	3.6
2004-2008	44,476	9,404	21.1	21,203	47.7	10,173	22.9	1,830	4.1	1,866	4.2
2003-2007	44,412	9,291	20.9	21,174	47.7	10,199	23.0	1,685	3.8	2,063	4.6
2002-2006	44,601	9,333	20.9	21,112	47.3	10,317	23.1	1,618	3.6	2,221	5.0
2001-2005	44,820	9,265	20.7	21,325	47.6	10,185	22.7	1,577	3.5	2,468	5.5
2000-2004	45,119	9,250	20.5	21,531	47.7	10,133	22.5	1,545	3.4	2,660	5.9
1999-2003	45,265	9,200	20.3	21,821	48.2	9,981	22.1	1,487	3.3	2,776	6.1
1998-2002	45,161	9,030	20.0	21,881	48.5	9,852	21.8	1,534	3.4	2,864	6.3
1997-2001	44,379	8,559	19.3	21,750	49.0	9,513	21.4	1,538	3.5	3,019	6.8
1996-2000	43,194	8,031	18.6	21,397	49.5	9,234	21.4	1,513	3.5	3,019	7.0
1995-1999	42,185	7,536	17.9	20,954	49.7	9,057	21.5	1,502	3.6	3,136	7.4
1994-1998	40,824	6,946	17.0	20,259	49.6	8,849	21.7	1,523	3.7	3,247	8.0
1993-1997	39,585	6,279	15.9	19,832	50.1	8,629	21.8	1,522	3.8	3,323	8.4
1992-1996	38,686	5,702	14.7	19,478	50.3	8,532	22.1	1,563	4.0	3,411	8.8
1991-1995	38,276	5,171	13.5	19,123	50.0	8,556	22.4	1,636	4.3	3,790	9.9
1990-1994	37,746	4,707	12.5	18,627	49.3	8,517	22.6	1,704	4.5	4,191	11.1
1989-1993	37,139	4,325	11.6	17,916	48.2	8,500	22.9	1,762	4.7	4,636	12.5
1988-1992	36,355	3,975	10.9	17,118	47.1	8,738	24.0	1,839	5.1	4,685	12.9
1987-1991	35,267	3,611	10.2	16,120	45.7	8,785	24.9	1,828	5.2	4,923	14.0
1986-1990	33,693	3,218	9.6	15,061	44.7	8,811	26.2	1,818	5.4	4,785	14.2
1985-1989	31,924	2,770	8.7	14,081	44.1	8,791	27.5	1,848	5.8	4,434	13.9

Notes:
In Situ Stage represents the presence of malignant cells within the cell group from which they arose, with no penetration of basement membrane of the tissue and no stromal invasion.
Localized Stage represents invasive cancer confined to the organ of origin or intralumenal extension where specified as an intralumenal extension to immediately contiguous segments of the large bowel.
Regional Stage represents direct extension to adjacent organs or tissues or involvement of the regional lymph nodes.
Distant Stage represents direct continuity to non-adjacent organs, discontinuous metastasis or involvement of the distant lymph nodes.
COVID-19 Pandemic: In 2020, the highly publicized impact of the COVID-19 pandemic on health services and the consequential delays and reductions in cancer screening and diagnosis led to a decline in the 2020 incidence rates for most cancer sites. Because 2020 was a temporary, anomalous year, it can bias estimates such as cancer incidence trends.
Source : Michigan Resident Cancer Incidence File. Updated with cases processed through November 30, 2022. Division for Vital Records & Health Statistics, Michigan Department of Health & Human Services.
Last Updated : April 13, 2023