Five-year Breast Cancer Incidence by Stage at Diagnosis
Monroe County Health Department District 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	606	108	17.8	318	52.5	131	21.6	31	5.1	18	3.0
2015-2019	631	111	17.6	322	51.0	145	23.0	32	5.1	21	3.3
2014-2018	609	111	18.2	312	51.2	135	22.2	26	4.3	25	4.1
2013-2017	589	114	19.4	291	49.4	133	22.6	34	5.8	17	2.9
2012-2016	614	119	19.4	313	51.0	133	21.7	32	5.2	17	2.8
2011-2015	607	127	20.9	300	49.4	133	21.9	31	5.1	16	2.6
2010-2014	625	130	20.8	313	50.1	135	21.6	34	5.4	13	2.1
2009-2013	658	135	20.5	331	50.3	143	21.7	39	5.9	10	1.5
2008-2012	662	132	19.9	324	48.9	154	23.3	34	5.1	18	2.7
2007-2011	654	128	19.6	310	47.4	158	24.2	37	5.7	21	3.2
2006-2010	603	110	18.2	283	46.9	145	24.0	39	6.5	26	4.3
2005-2009	549	92	16.8	259	47.2	128	23.3	39	7.1	31	5.6
2004-2008	533	80	15.0	254	47.7	129	24.2	38	7.1	32	6.0
2003-2007	506	73	14.4	257	50.8	111	21.9	33	6.5	32	6.3
2002-2006	475	72	15.2	241	50.7	98	20.6	26	5.5	38	8.0
2001-2005	503	82	16.3	258	51.3	105	20.9	21	4.2	37	7.4
2000-2004	528	89	16.9	260	49.2	114	21.6	21	4.0	44	8.3
1999-2003	496	87	17.5	237	47.8	106	21.4	16	3.2	50	10.1
1998-2002	517	86	16.6	249	48.2	117	22.6	19	3.7	46	8.9
1997-2001	545	82	15.0	281	51.6	119	21.8	21	3.9	42	7.7
1996-2000	518	69	13.3	266	51.4	118	22.8	23	4.4	42	8.1
1995-1999	468	55	11.8	257	54.9	103	22.0	19	4.1	34	7.3
1994-1998	458	46	10.0	263	57.4	97	21.2	22	4.8	30	6.6
1993-1997	403	35	8.7	229	56.8	85	21.1	24	6.0	30	7.4
1992-1996	370	28	7.6	187	50.5	85	23.0	22	5.9	48	13.0
1991-1995	353	26	7.4	176	49.9	71	20.1	22	6.2	58	16.4
1990-1994	344	27	7.8	161	46.8	64	18.6	23	6.7	69	20.1
1989-1993	337	25	7.4	144	42.7	61	18.1	24	7.1	83	24.6
1988-1992	323	25	7.7	124	38.4	53	16.4	21	6.5	100	31.0
1987-1991	272	21	7.7	103	37.9	37	13.6	24	8.8	87	32.0
1986-1990	254	14	5.5	77	30.3	35	13.8	21	8.3	107	42.1
1985-1989	234	14	6.0	56	23.9	36	15.4	19	8.1	109	46.6

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