ArticleJournal of cancer research and clinical oncology2023
Impact of the COVID-19 pandemic on reported cancer diagnoses in Bavaria, Germany.
Article in Journal of cancer research and clinical oncology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.
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Who cites it
17 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.
- Pooled it
- Incidence Trends of Early-Onset Colorectal Cancer in Germany: A Registry-Based Study From 2003 to 2023.International journal of cancer · 2026Article
- Inpatient Hemato-Oncology Service Use Before, During, and After COVID-19 Restrictions in a Romanian Tertiary Center.Cureus · 2026Article
- Colorectal cancer incidence before and during the COVID-19 pandemic: a non-linear interrupted time-series analysis.Scientific reports · 2026Article
- Article
- Cancer incidence trends in Baden-Württemberg (Southwest Germany) during and after the COVID-19 pandemic (2020-2023).Journal of cancer research and clinical oncology · 2025Article
- Risk factors for neuroendocrine neoplasms: protocol for a case-control study based on a record linkage of registry and claims data.BMJ open · 2025Article
- Changes in cancer incidence and stage during the COVID-19 pandemic in 2020-2021 in the Nordic countries.Acta oncologica (Stockholm, Sweden) · 2025Article
- The impact of the COVID-19 Pandemic on breast cancer incidence and stage: Results of a retrospective study.Qatar medical journal · 2025Article
- Impact of the COVID-19 pandemic on cancer diagnoses, oncological care and cancer patients in Germany: a report from the "COVID & Cancer" workshop 2023 of the German Society for Epidemiology (DGEpi).Journal of cancer research and clinical oncology · 2024Article
- Impact of COVID-19 Pandemic on Delay of Melanoma Diagnosis: A Systematic Review and Meta-Analysis.Cancers · 2024Review
- [Effects of the COVID-19 pandemic on inpatient dermatosurgery in Germany : Retrospective evaluation of the surgical cases from nine dermatology clinics].Dermatologie (Heidelberg, Germany) · 2024Article
- Article
- Impact of the COVID-19 Pandemic and Lockdown on Cancer Diagnoses Using Swiss Cantonal Cancer Registry Data.Cancers · 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
- COVID-19 pandemic shifted epidemiology for cancer screening sites: breast, cervix, colon, and rectum.Frontiers in oncology · 2024Article
- Head and neck oncology management in the time of COVID-19: results of a head and neck cancer center.Journal of cancer research and clinical oncology · 2023Article
Corrections and comments
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Authors and funding
11 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe aim of our study was to explore the impact of the COVID-19 pandemic on reported cancer cases in Bavaria, Germany, by comparing pre-pandemic (March 2019 to February 2020) and pandemic period (March 2020 to February 2021).
methodsData on incident cases were retrieved from the Bavarian Cancer Registry (until 22nd April 2022). We included patients with malignant and in situ neoplasms reported by pathology departments with consistent reporting. We calculated the number of incident cases during the COVID-19 pandemic and the pre-pandemic period with 95% confidence intervals (CI) with Bonferroni correction (α = 0.0018) based on a Poisson approach. We stratified for malignancy (malignant, in situ), tumor site, and month of year.
resultsData was available for 30 out of 58 pathology departments (51.7%) from Bavaria. Incident malignant neoplasms dropped from 42,857 cases in the pre-pandemic period to 39,980 cases in the pandemic period (- 6.7%; 95% CI - 8.7%, - 4.7%). Reductions were higher for colon, rectum, skin/melanoma as well as liver (> 10.0% reduction) and less for breast cancer (4.9% reduction). No case reductions were observed for pancreas, esophagus, ovary, and cervix. Percent changes were largest for April 2020 (- 20.9%; 95% CI - 24.7%, - 16.8%) and January 2021 (- 25.2%; 95% CI - 28.8%, - 21.5%) compared to the previous year. Declines tended to be larger for in situ compared to malignant neoplasms.
conclusionDetection and diagnosis of cancer were substantially reduced during the COVID-19 pandemic. Potential effects, e.g. a stage shift of tumors or an increase of cancer mortality, need to be monitored.
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