# List of cancer clusters

This is a list of cancer clusters. A cancer cluster is a statistical event, which may or may not have a cause other than chance. There are other cancer clusters that occur without any obvious source of carcinogens.
North America :
| Date | Disease | Location | Number of cases | Cause | References |
| 1917–1927 | Osteosarcoma | New Jersey, Connecticut, Illinois | 86 | Radium | |
| 1938–1971 | Adenocarcinoma | U.S. | 750 | Diethylstilbestrol | |
| ?–2018 | Various cancers | St. Louis, Missouri | 56 | Uranium | |
| 1967–1973 | Liver angiosarcoma (Hemangiosarcoma) | Louisville, Kentucky | 4 | Vinyl chloride monomer | |
| 1968–1995 | Leukemia, Lymphoma | Camp Lejeune, North Carolina | 13 | Trichloroethylene 1,2-Dichloroethylene Tetrachloroethylene Methylene chloride Vinyl chloride Main article: Camp Lejeune water contamination | |
| 1979–1996 | Brain, CNS cancer | Toms River, New Jersey | 90+ | SAN trimer Styrene Acrylonitrile | |
| 1973–1986 | Leukemia | Woburn, Massachusetts | 21 | Chloroform Tetrachloroethylene Trichloroethylene 1,2-Dichloroethene Arsenic | |
| 1982–1984 | Testicular cancer | Fulton County, New York | 3 | Dimethylformamide (DMF) 2-Ethoxyethanol 2-Ethoxyethyl acetate 2-Butoxyethanol | |
| 1987–1999 | Brain cancer, Leukemia, Lymphoma | Wilmington, Massachusetts | 20 | Unknown N-Nitrosodimethylamine (NDMA) | |
| 1993–2008 | Childhood brain cancer, brain tumors, colon cancer, anal cancer, rectal cancer, breast cancer. Also nervous system damaged. | The Acreage, Florida | Unknown | Unknown Some have linked it to a nearby Pratt and Whitney, Beach Aggregates, and the Florida crystals. | |
| 1997–2002 | Leukemia, rhabdomyosarcoma | Fallon, Nevada | 17 | Unknown Tungsten Arsenic Chlorpyrifos Dichlorodiphenyldichloroethylene (DDE) Benzene in jet fuel | |
| 1996–2013 | Leukemia, brain tumors, lymphoma, other forms | Clyde, Ohio | 36, mostly children | Unknown Main article: Clyde cancer cluster | |
| 1953–2010 | Wide range of cancers | Shannon, Quebec | 400 | Trichloroethylene | |
| 2009-2024 | Wide range of cancers, predominantly breast cancer | Raleigh, NC | 99 | Aroclor 1262, a commercial mixture of polychlorinated biphenyl (PCB) compounds | 37 |
| Europe ||||||
| Date | Disease | Location | Number of cases | Cause | References |
| 1968–1995 | Leukemia | Seascale, Sellafield, England | 9 | Unsure Studies indicate a correlation with paternal preconceptional irradiation (PPI) | |
| 1978–1993 | Leukemia | La Hague, Normandy, France | 27 | Unknown Speculated to be tritium | |
| 1980s | Leukemia, brain tumors | East Yorkshire, England | 13 | Polonium-210, lead, arsenic and other metal emitter; unproven link to Capper Pass tin smelter in Melton | |
| 1990–2005 | Leukemia | Elbmarsch, Lower Saxony and Krümmel (Kruemmel), Geesthacht, Schleswig-Holstein in Germany | 16 | Unknown Speculated to be actinide, especially plutonium-241 of unknown origin that was found in the area or tritium from a nearby nuclear power plant See also: Elbmarsch § Cancer cluster | |
| India ||||||
| Date | Disease | Location | Number of cases | Cause | References |
| mid 1980s | Skin lesions, arsenicosis | West Bengal, India | Unknown | Arsenic | |