In conclusion, previous studies have suggested that HL might be associated with exposure to pesticides, but it has generally been less compelling than for other lymphatic and hematopoietic cancers [34]. This study provides additional information on the relationship between HL and pesticide exposure. The findings suggest a potential for an increased risk of HL from exposure to fungicides, insecticides, and those pesticides previously classified as probably carcinogenic to humans. It also suggests that examining pesticides by their mode of action might be a useful analytical technique in future studies. Future studies should also consider age of onset and subtype of HL in the assessment of relationships with pesticide exposure.