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Risk of second primary cancer in survivors of in situ melanoma
Journal article   Peer reviewed

Risk of second primary cancer in survivors of in situ melanoma

Michael G Kimlin, D R Youlden, Alison M Brodie, Tracey Di Sipio, Philippa H Youl, V Nair-Shalliker and P D Baade
Journal of Investigative Dermatology, Vol.139(4), pp.842-847
2019
url
https://doi.org/10.1016/j.jid.2018.11.001View
Published Version

Abstract

Invasive melanoma survivors have an increased risk of developing second primary cancers, however, similar risks associated with in situ melanoma haven't been established. We evaluated 43,829 first primary in situ melanoma survivors diagnosed from 1982-2012 in Queensland, Australia. Risk of second non-melanoma primary cancers was estimated from standardized incidence ratios with 95% confidence intervals. A total of 4,917 (11.3%) in situ melanoma survivors developed a second primary cancer. No net increased risk compared with the general population was found. In those aged <50 years, risk was increased by 13% for all cancers combined. In situ melanoma survivors had significantly increased risks of developing lip, brain, and thyroid cancers, and decreased risks of head and neck, lung, bladder, and colorectal cancers. Male in situ melanoma survivors had a significantly increased risk of prostate cancer; female survivors had an increased risk of thyroid cancer and lymphoid leukaemia, and a decreased risk of gynaecological cancers. Findings indicate in situ melanoma may predict the diagnosis of certain second primary cancers. This altered risk may be due to biological, behavioural or genetic factors, or increased medical surveillance, and requires further investigation, particularly among people aged under 50 years.

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Dermatology

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