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Mortality in women with pregnancy-associated malignant melanoma

Published:October 15, 2014DOI:https://doi.org/10.1016/j.jaad.2014.09.018

      Background

      Malignant melanoma (MM) is one of the most common malignancies in young women. It remains debated whether a MM diagnosed during pregnancy or lactation has a worse prognosis.

      Objective

      We sought to examine mortality in women with pregnancy-associated MM (PAMM) (diagnosed during pregnancy and up to 2-years postpartum).

      Methods

      This was a population-based cohort study based on information retrieved from the Swedish Cancer and Multi-Generation Registers. Hazard ratios with 95% confidence intervals adjusted for age, period, education, parity, and tumor location were estimated.

      Results

      In total, 6857 women and girls aged 15 to 44 years with a diagnosis of cutaneous MM between 1963 and 2009 were identified. Of these, 1019 cases were classified as PAMM. The cause-specific mortality did not differ between PAMM and MM not diagnosed near childbirth (adjusted hazard ratio 1.09, 95% confidence interval 0.83-1.42).

      Limitations

      Information on stage at diagnosis was available only for a subset of patients

      Conclusion

      Overall, the cause-specific mortality in women and girls with PAMM did not differ from that in women and girls with non-PAMM. The current findings do not provide evidence of an adverse prognostic influence of pregnancy or a recent birth.

      Key words

      Abbreviations used:

      CI (confidence interval), FPM (flexible parametric survival model), HR (hazard ratio), MM (malignant melanoma), PAMM (pregnancy-associated malignant melanoma)
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