ReviewCancers2020
Frequency of Pregnancy-Associated Cancer: A Systematic Review of Population-Based Studies.
Review in Cancers, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 3 of them syntheses that pooled 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.
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.
Who cites it
34 citing papers in PubMed, 3 syntheses or guidelines pooled it.
- "I didn't really fit into any boxes": understanding the experiences of women affected by cancer in pregnancy and up to one-year postpartum-a mixed-method systematic review.Journal of cancer survivorship : research and practice · 2026Pooled it
- Pregnancy, cancer, and radiation-a modern refresher.JNCI cancer spectrum · 2026Guideline
- Long-term Mortality in Individuals Diagnosed With Cancer During Pregnancy or Postpartum.JAMA oncology · 2023Pooled it
- Subsequent pregnancies after a diagnosis of pregnancy-associated cancer.Acta obstetricia et gynecologica Scandinavica · 2026Article
- Racial and Ethnic Disparities in Adverse Pregnancy Outcomes Among Women with Early Onset Cancer in the United States.Cancers · 2026Article
- Pregnancy-associated cancer death in the United States, 2018-2023.The oncologist · 2026Article
- Society for Maternal-Fetal Medicine Consult Series #76: Cancer in pregnancy.Pregnancy (Hoboken, N.J.) · 2026Article
- Trends and outcomes of fertility preservation in patients presenting with cancer during pregnancy or postpartum-a longitudinal observational cohort study.Frontiers in endocrinology · 2026Observational
- Diagnosis and treatment of breast cancer during pregnancy: a comprehensive review.Frontiers in medicine · 2026Review
- Vulvar and vaginal cancer during pregnancy: A pooled analysis of 15 cases from the International Network on Cancer, Infertility and Pregnancy and review of the literature.Acta obstetricia et gynecologica Scandinavica · 2025Review
- Characterization of the tumor immune microenvironment in pregnancy-associated breast cancer through multiplex immunohistochemistry and transcriptome analyses.Breast cancer research : BCR · 2025Article
- Cervical Dysplasia and Cervical Cancer During Pregnancy: From Pathogenesis to Clinical Management.Journal of clinical medicine · 2025Review
- Cancer and Pregnancy: Update of Estimates in Italy by Linking Data from Cancer Registries and Hospital Discharge Records.Cancers · 2025Article
- Fertility and abortion: A population-based comparison between women with cancer and those in childbearing age.Tumori · 2025Article
- Review
- Evaluating Offspring After Pregnancy-Associated Cancer: A Systematic Review of Neonatal Outcomes.Cancers · 2025Review
- AI-assisted Total Body Dermoscopic Evaluation of Changes in Melanocytic Nevi during Pregnancy: A Prospective, Comparative Study of 2,799 Nevi.Acta dermato-venereologica · 2025Article
- Cancer Diagnosis During Pregnancy and Livebirth Outcomes in the Adolescent and Young Adult Horizon Study.Journal of women's health (2002) · 2025Observational
- Breast cancer during pregnancy-The oncologist's point of view.Acta obstetricia et gynecologica Scandinavica · 2024Article
- Pregnancy-associated gynecological cancer in New South Wales, Australia 1994-2013: A population-based historical cohort study.Acta obstetricia et gynecologica Scandinavica · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
Abstract
Despite numerous available resources of evidence, the results about the frequency of pregnancy-associated cancer (PAC) still show poor comparability due to dissimilarities in the study design and methodology, inclusion criteria, incoherent duration of follow-up and a heterogeneous reference population. We conducted a systematic review of population-based studies on PAC published up to December 2019, to provide updated research on this topic, highlighting strengths and limitations. Of the 24 papers included, 11 considered all types of tumors and 13 dealt with specific types of cancer. Differences in the procedures for estimating the frequency of PAC emerged even among population studies. However, we found consistent results for overall frequency of PAC- around 1/1000 pregnancies. Our review suggests that about 25% of PAC cases are diagnosed during pregnancy, confirming the hypothesis of an excess of diagnosis in the postpregnancy period. Sparse and inconsistent results were found regarding a potential increase in the frequency of PAC over calendar years. Alignments in the strategy to identify PAC are needed to overcome methodological weaknesses.
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What OpenQuestion holds
Registered trials
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.