Epidemiological associations between arsenic and cancer in Argentina.

The population of a large central area of Argentina is affected by a syndrome designed as "regional and endemic chronic hydroarsenicism." A number of types of neoplasms, especially of skin, urinary bladder, and of digestive system, occur with higher frequency in these areas. Drinking water in some of the affected areas contains from 0.1 to 1.2 mg/L of As.