[A suspect cluster of childhood cancer in Valle di Ledro (Province of Trento, Northern Italy). Epidemiological evaluation, risk management, and communication activities, 2018-2020].

Background: leukaemia is the most prevalent form of childhood cancer, an overall rare condition in childhood. Even few cases occurring in a small community can cause considerable apprehension among the population. From 2014 to 2017, 4 cases of childhood cancer occurred in Valle di Ledro, a municipality of 5,300 inhabitants in Province of Trento (Northern Italy), and a group of concerned citizens asked provincial health authorities for an investigation.