Evidence map›Paper›PMID 34040177›Full record

ArticleBritish journal of cancer2021

The risk of contralateral breast cancer: a SEER-based analysis.

Vasily Giannakeas, David W Lim, Steven A Narod

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in British journal of cancer, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 1 pooled it
4.3field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

48 citing papers in PubMed, 1 synthesis or guideline pooled it, 72 citations in OpenAlex.

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  14. Thyroid avoidance in treatment planning for breast cancer patients irradiated to the supraclavicular nodes.Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 3 institutions in 1 country.

Vasily Giannakeas *Women's College Research Institute, Women's College Hospital, Toronto, ON, Canada.
David W Lim *Women's College Research Institute, Women's College Hospital, Toronto, ON, Canada.
Steven A NarodWomen's College Research Institute, Women's College Hospital, Toronto, ON, Canada. steven.narod@wchospital.ca.ORCID http://orcid.org/0000-0001-5798-0626
Ontario Institute for Cancer Research · CAUniversity of Toronto · CAWomen's College Hospital · CA

Funding

CIHR
6 · The paper itself

Abstract

backgroundWe sought to estimate the annual risk and 25-year cumulative risk of contralateral breast cancer among women with stage 0-III unilateral breast cancer.

methodsWe identified 812,851 women with unilateral breast cancer diagnosed between 1990 and 2015 in the SEER database and followed them for contralateral breast cancer for up to 25 years. Women with a known bilateral mastectomy were excluded. We calculated the annual risk of contralateral breast cancer by age at diagnosis, by time since diagnosis and by current age. We compared risks by ductal carcinoma in situ (DCIS) versus invasive disease, by race and by oestrogen receptor (ER) status of the first cancer.

resultsThere were 25,958 cases of contralateral invasive breast cancer diagnosed (3.2% of all patients). The annual risk of contralateral breast cancer over the 25-year follow-up period was 0.37% and the 25-year actuarial risk of contralateral invasive breast cancer was 9.9%. The annual risk varied to a small degree by age of diagnosis, by time elapsed since diagnosis and by current age. The 25-year actuarial risk was similar for DCIS and invasive breast cancer patients (10.1 versus 9.9%). The 25-year actuarial risk was higher for black women (12.7%) than for white women (9.7%) and was lower for women with ER-positive breast cancer (9.5%) than for women with ER-negative breast cancer (11.2%).

conclusionsWomen with unilateral breast cancer experience an annual risk of contralateral breast cancer ~0.4% per year, which persists over the 25-year follow-up period.

Indexed as

AdultAgedAged, 80 and overAge FactorsBreast NeoplasmsCarcinoma, Ductal, BreastFemaleHumansMiddle AgedNeoplasms, Second PrimaryNeoplasm StagingReceptors, EstrogenRisk FactorsSEER ProgramReceptors, Estrogen

Identifiers

PMID34040177
PMCPMC8368197
OpenAlexW3164536770

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.