title: Cancer and a fatiguing illness in Northern Nevada--a causal hypothesis.
abstract: OBJECTIVE
  We investigated the possibility that chronic fatigue syndrome (CFS) predisposes to cancer by comparing the cancer pattern in an area in northern Nevada, where an outbreak of a fatiguing illness, which included cases of CFS, was reported, to an area in southern Nevada, where no such illness was reported.
  
  
  METHODS
  Data from the computerized Nevada Cancer Registry were utilized to compare incidence rates of four malignancies--brain cancer, non-Hodgkin lymphoma (NHL), lung cancer, and breast cancer--in Washoe and Lyon Counties, where an unexplained fatiguing illness was reported during 1984-86, with comparably sized Clark County, where no such illness was reported.
  
  
  RESULTS
  Higher incidences of NHL and primary brain tumors were noted in the two northern Nevada counties (Washoe and Lyon) in 1986 and 1987 respectively, compared to the southern Nevada (Clark) county. Similar patterns were not seen for breast or lung cancer.
  
  
  CONCLUSIONS
  This study provides a model for investigating the possible predisposition of CFS patients to develop cancer using other cohorts, but it is currently premature to accept such a link at this time.
authors.affiliation: Division of Cancer Epidemiology and Genetics, NIH, Bethesda, Maryland 20892, USA.
authors.forename: P H
authors.initials: PH
authors.lastname: Levine
authors.forename: T R
authors.initials: TR
authors.lastname: Fears
authors.forename: P
authors.initials: P
authors.lastname: Cummings
authors.forename: R N
authors.initials: RN
authors.lastname: Hoover
mesh_terms: D000328:Adult; D001932:Brain Neoplasms / Q000453:epidemiology; D001943:Breast Neoplasms / Q000453:epidemiology; D015984:Causality; D015673:Fatigue Syndrome, Chronic / Q000150:complications / Q000453:epidemiology*; D005260:Female; D006801:Humans; D015994:Incidence; D008175:Lung Neoplasms / Q000453:epidemiology; D008228:Lymphoma, Non-Hodgkin / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000150:complications / Q000453:epidemiology*; D009505:Nevada / Q000453:epidemiology; D016012:Poisson Distribution