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.

Frequency of Pregnancy‐Associated Cancer: A Systematic Review of Population‐Based Studies / M. Dalmartello, E. Negri, C. La Vecchia, G. Scarfone, B. Buonomo, F.A. Peccatori, F. Parazzini. - In: CANCERS. - ISSN 2072-6694. - 12:6(2020 Jun).

Frequency of Pregnancy‐Associated Cancer: A Systematic Review of Population‐Based Studies

M. Dalmartello
Primo
;
E. Negri
Secondo
;
C. La Vecchia;F. Parazzini
Ultimo
2020-06

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.
cancer; pregnancy; population‐study; frequency
Settore MED/01 - Statistica Medica
26-mag-2020
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/737165
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