Cancer in Migrants: A Population-Based Study in Italy

Simple Summary This study investigates cancer in migrants in Southern Italy, who represent a neglected but vulnerable population. We used data from the Eastern Sicily Cancer Registry collected between 2004 and 2019 to compare the adjusted proportionate morbidity ratio for the most common cancer types in migrants and non-migrants, and we calculated the odds of migrant status for one cancer compared to all cancers. The migrants/non-migrants odds of cancer was 2.1%, with most cancers occurring in migrant women. We observed increased proportions in cervical and lung cancer, with higher odds of cervical cancer and lower odds of colorectal cancer in migrants. Measures should be implemented to enhance the access of migrants to prevention, early diagnosis and care for cancer. These interventions should account for the migrant's country of origin. Particular attention should be given to HPV vaccination, cervical cancer screening and tobacco control to reduce the cancer burden in this population. Background: Migrants are a vulnerable and neglected population. We aimed at investigating cancer proportionate rates in migrants in Sicily, Southern Italy. Methods: We extracted data on new cancer cases diagnosed between 2004 and 2019 from the Eastern Sicily cancer registry. We compared the adjusted proportionate morbidity ratio (PMR) for the most common cancer types among migrants and non-migrants. We fitted multivariate logistic regression models comparing one cancer to all other cancers to calculate odds ratios (ORs) and 95% confidence intervals (CIs) for migration status. The analysis was stratified by region of origin. Results: Overall, 4726 new cancer cases occurred in migrants between 2004 and 2019, 63.5% of those among women and 224,211 in non-migrants, including 54.5% among men, with odds for migrants/non-migrants of 2.1%. Migrants had an increased proportion of cervical (PMR = 2.68, 95% CI = 2.29-3.10) and lung cancer (PMR = 1.20, 95% CI = 1.07-1.33). The highest OR in migrants was observed for cervical cancer (OR = 3.54, 95% CI = 2.99-4.20). Colorectal cancer was decreased among migrants (OR = 0.86, 95% CI = 0.77-0.96). Conclusions: Migrants to Sicily have higher odds of cervical cancer and a decreased risk of colorectal cancer compared to non-migrants. Increased odds were also detected for lung cancer, in particular in women. Different cancer patterns could be observed based on the region of origin. HPV-related cancers need targeted attention in migrants living in Sicily.