Reports, Publications, & FAQs

Cancer Surveillance System

Reports, Publications, & FAQs

Cancer Incidence in the CSS Area

CSS Data in Scientific Publications

CSS data have been used in dozens of research studies, resulting in nearly 1400 published papers.

Frequent Asked Questions (FAQs)

  1. How many cancer cases are recorded by the CSS each year?
  2. How rapidly are new cancer cases identified by the CSS?
  3. How accurate are the data collected by the CSS?
  4. What are the most common cancers recorded in the CSS?
  5. How many CSS patients are there with more than one cancer diagnosis?
  1. How many cancer cases are recorded by the CSS each year?
     
    The CSS recorded approximately 30,600 new cancer cases in 2016. This compares to 9,171 new cancer diagnoses occuring 1974, the first year of case ascertainment for the CSS.
     
  2. How rapidly are new cancer cases identified by the CSS?
     
    Washington State law requires institutions and physicians to provide the CSS with information about each potential new cancer case within 45 days of diagnosis. CSS completes at least 95% of the case reporting for a given year by June 30th i.e., within 6 months, of the subsequent year. For example, as of April 30, 2018, the CSS had completed over 99% of the reporting for 2017 diagnoses.
      
  3. How accurate are the data collected by the CSS?
     
    The CSS has consistently scored in the top 3 among the SEER registries in the annual assessments of data quality. It is the only registry to be ranked in one of the top three positions during each of more than 20 assessment years.
      
  4. What are the most common cancers recorded in the CSS?
     
    In 2016, the 10 most common cancers recorded in the CSS for males and females and the number of cases diagnosed (in parentheses), were as follows:
     
    Rank Female Male
    1 Breast (5154) Prostate (3085)
    2 Melanoma (1561) Lung (1457)
    3 Lung (1488) Colon/Rectum (1081)
    4 Colon/Rectum (983) Bladder (961)
    5 Endometrium (874) Melanoma (894)
    6 Lymphoma  (578) Lymphoma (715)
    7 Thyroid (573) Kidney/Renal Pelvis (529)
    8 Pancreas (360) Leukemia (491)
    9 Leukemia (338) Liver (376)
    10 Kidney/Renal Pelvis (323) Pancreas (338)
      
  5. How many CSS patients are there with more than one reportable diagnosis?
     
    Of the 844,739 patients diagnosed between 1974 and 2017 and recorded by the CSS, 110,922 (15.1%) had more than one reportable diagnosis.