On Monday, the National Institute for Occupational Safety and Health published new findings from a three-year cancer study of 9/11 respondents.
The study found previously unreported increased risk of tonsil cancer in 9/11 workers compared to the general population of the state of New York. Research also confirmed previous findings of an increased incidence of thyroid cancer, skin melanoma and prostate cancer among 9/11 workers.
The study also confirmed previous findings of a reduced risk of lung cancer in this occupational group, which researchers suggest may be the result of low smoking rates among these workers compared to the general population.
Researchers did not confirm previous findings of an increased risk of non-Hodgkin̵7;s lymphoma or multiple myeloma and found shorter latency periods for prostate cancer and skin melanoma than expected.
Among cancer patients, researchers found improved survival rates among patients participating in the medical monitoring and treatment program sponsored by the NIOSH WTC Health Program compared to the general population of New York.
Specifically, workers with prostate, lung, kidney, or colorectal cancer had mortality rates that were 26% to 64% lower than those in the general population, according to the NIOSH. Similar benefits were observed for workers with skin melanoma, multiple myeloma, esophageal cancer and liver cancer.
According to NIOSH, previous cancer studies of separate exposed groups were limited by the small number and differences in methods used. To address these limitations, researchers from the Albert Einstein College of Medicine collected information from 13 state cancer registries, the National Death Index and the New York City and State Vital Registers.