ArticleEuropean radiology2022
Impact of the COVID-19 lockdown in France on the diagnosis and staging of breast cancers in a tertiary cancer centre.
Article in European radiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.
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Who cites it
21 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Impact of the Sars-Cov-2 outbreak on the initial clinical presentation of new solid cancer diagnoses: a systematic review and meta-analysis.BMC cancer · 2024Pooled it
- A systematic review of the impact of the COVID-19 pandemic on breast cancer screening and diagnosis.Breast (Edinburgh, Scotland) · 2023Pooled it
- The Impact of the COVID-19 Pandemic on Patients with Breast Cancer, Diagnostic Delays and Disease Progression: A Retrospective Study.Iranian journal of medical sciences · 2026Article
- Analysis of the impact of the COVID-19 pandemic on the stage at diagnosis in breast cancer patients at a French comprehensive cancer centre, through two different methods: a preliminary study.Breast cancer research and treatment · 2025Article
- COVID-19 pandemic interruption of breast cancer screening is linked to clinical upstaging at presentation: the roles of demographics, socioeconomic status and unmet social needs.Breast cancer research and treatment · 2025Observational
- Article
- The effect of the COVID-19 pandemic on clinical and pathologic stages of patients diagnosed with breast cancer.Irish journal of medical science · 2025Article
- Retrospective Impact of COVID-19 Pandemic on Primary Breast Cancer Care.Breast care (Basel, Switzerland) · 2024Review
- Impact of the COVID-19 pandemic on breast cancer patient pathways and outcomes in the United Kingdom and the Republic of Ireland - a scoping review.British journal of cancer · 2024Article
- The impact of the COVID-19 pandemic on symptomatic breast cancer presentations in an Irish breast cancer unit: a retrospective cohort study.Irish journal of medical science · 2024Article
- The impact of the UK COVID-19 lockdown on the screening, diagnostics and incidence of breast, colorectal, lung and prostate cancer in the UK: a population-based cohort study.Frontiers in oncology · 2024Article
- The Impact of COVID-19 on Treatment Practices for Patients With Early Breast Cancer: A Cross-Sectional Study From a Large Cancer Center in Italy.The oncologist · 2023Review
- Impact of the COVID-19 pandemic on clinical presentation, treatments, and outcomes of new breast cancer patients: A retrospective multicenter cohort study.Cancer medicine · 2023Article
- Impact of Covid-19 on breast cancer stage at discovery, and time to treatment in Cote d'Or, France.Preventive medicine reports · 2023Article
- Breast cancer care amidst a pandemic: a scoping review to understand the impact of coronavirus disease 2019 on health services and health outcomes.International journal for quality in health care : journal of the International Society for Quality in Health Care · 2023Article
- A Cluster of Paragonimiasis with Delayed Diagnosis Due to Difficulty Distinguishing Symptoms from Post-COVID-19 Respiratory Symptoms: A Report of Five Cases.Medicina (Kaunas, Lithuania) · 2023Article
- Investigating the impact of COVID-19 on patients with cancer from areas of conflict within the MENA region treated at King Hussein Cancer Center.Frontiers in oncology · 2023Article
- Article
- Decrease in the number of patients diagnosed with cancer during the COVID-19 pandemic in Germany.Journal of cancer research and clinical oncology · 2022Article
- Delayed visit and treatment of lung cancer during the coronavirus disease 2019 pandemic in Japan: a retrospective study.The Journal of international medical research · 2022Article
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9 authors.
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No grant is acknowledged in the PubMed record.
Abstract
objectivesDue to COVID-19, a lockdown took place between March 17 and May 1, 2020, in France. This study evaluates the impact of the lockdown on the diagnosis and staging of breast cancers in a tertiary cancer centre.
methodsOur database was searched for all consecutive invasive breast cancers diagnosed in our institution during the lockdown (36 working days), during equivalent periods of 36 working days before and after lockdown and a reference period in 2019. The number and staging of breast cancers diagnosed during and after lockdown were compared to the pre-lockdown and reference periods. Tumour maximum diameters were compared using the Mann-Whitney test. Proportions of tumour size categories (T), ipsilateral axillary lymph node invasion (N) and presence of distant metastasis (M) were compared using Fisher's exact test.
resultsCompared to the reference period (n = 40 in average), the number of breast cancers diagnosed during lockdown (n = 32) decreased by 20% but increased by 48% after the lockdown (n = 59). After the lockdown, comparatively to the reference period, breast cancers were more often symptomatic (86% vs 57%; p = 0.001) and demonstrated bigger tumour sizes (p = 0.0008), the rates of small tumours (T1) were reduced by 38%, locally advanced cancers (T3, T4) increased by 80% and lymph node invasion increased by 64%.
conclusionThe COVID-19 lockdown was associated with a 20% decrease in the number of diagnosed breast cancers. Because of delayed diagnosis, breast cancers detected after the lockdown had poorer prognosis with bigger tumour sizes and higher rates of node invasion. KEY POINTS: • The number of breast cancer diagnosed in a large tertiary cancer centre in France decreased by 20% during the first COVID-19 lockdown. • Because of delayed diagnosis, breast cancers demonstrated bigger tumour size and more frequent axillary lymph node invasion after the lockdown. • In case of a new lockdown, breast screening programme and follow-up examinations should not be suspended and patients with clinical symptoms should be encouraged to seek attention promptly.
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