Risk of second primary cancer among esophageal cancer patients: A pooled analysis of 13 cancer registries

Shu Chun Chuang, Mia Hashibe*, Ghislaine Scelo, David H. Brewster, Eero Pukkala, Soren Friis, Elizabeth Tracey, Elisabete Weiderpass, Kari Hemminki, Sharon Tamaro, Kee Seng Chia, Vera Pompe-Kirn, Erich V. Kliewer, Jon M. Tonita, Carmen Martos, Jon G. Jonasson, Carolyn M. Dresler, Paolo Boffetta, Paul Brennan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

60 Citations (Scopus)


Background: The objective of this study is to assess the risk of second primary cancers following a first primary esophageal cancer as well as the risk of esophageal cancer as a second primary, following first primary cancers of other sites. Methods: The present investigation is a multicenter study of 13 population-based cancer registries in Europe, Australia, Canada, and Singapore. To assess excess occurrence of second cancers after esophageal cancers, we calculated standardized incidence ratios (SIR) by dividing the observed numbers of second cancers by the expected number of cancers calculated from the accumulated person-years and the age-, sex-, calendar period-, and registry-specific first primary cancer incidence rates. Results: During the study period, 959 cases of second primary cancers occurred after an initial esophageal cancer, resulting in a SIR of 1.15 (95% confidence interval, 1.08-1.22). Second primary stomach cancers were associated with first primary esophageal adenocarcinomas (SIR, 2.13; 95% confidence interval, 1.26-3.37) and second primary cancers of the oral cavity and pharynx (6.68; 5.33-8.26), stomach (1.53; 1.14-2.01), larynx (3.24; 1.88-5.18), lung (1.55; 1.28-1.87), kidney (1.88; 1.18-2.85), and thyroid (2.92; 1.18-6.02) were associated with first primary squamous cell carcinomas of the esophagus. An excess of esophageal cancer as a second primary were observed following first primary cancers of the aerodigestive tract, female breast, cervix, testis, bladder, Hodgkin's lymphoma, and non-Hodgkin lymphoma. Conclusion: We observed associations of esophageal cancer with second primary head and neck cancers and lung cancer regardless of years of follow-up, which may suggest that common risk factors play a role in multiple tumor development.

Original languageEnglish
Pages (from-to)1543-1549
Number of pages7
JournalCancer Epidemiology Biomarkers and Prevention
Issue number6
Publication statusPublished - Jun 2008


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