[Return of immigrants: a cluster analysis of mesotheliomas among residents of the Veneto region who used to work at the ETERNIT AG factory at Niederurnen, Switzerland]. / Emigrazione di ritorno: un cluster di mesoteliomi in Veneto tra ex-lavoratori della Eternit AG di Niederurnen, Svizzera.

We identified 5 mesotheliomas among Italian migrant workers who returned home and settled in the Veneto Region, after employment at the ETERNIT AG factory in Switzerland. During the 1970s the factory employed about 1000 workers and the presence of Italian migrants was relevant. The cluster confirms that migration for work has caused exposures to carcinogenic substances and confirms that neoplastic diseases are occurring among those resettled in Italy and helps explaining the high occurrence of mesotheliomas in this country.