TABLE 2-1Differences in Prevalence for Three Cancers with Similar Numbers of New Cases per Year but Different Survival Rates, 2006

Estimated New Cases
(2009 estimate in parentheses)
Prevalence (complete)a
Thyroid30,180 (37,200)410,404
Leukemia (all types)35,070 (44,790)231,857
Pancreas33,730 (42,470)31,180 (invasive)
a

As defined by SEER, complete prevalence represents the number or proportion of people alive on a certain day who have been diagnosed with a disease, regardless of when the condition was diagnosed.

SOURCES: Incidence: http://seer​.cancer.gov​/csr/1975_2003/results_single​/sect_01_table.01.pdf; http://seer​.cancer.gov​/csr/1975_2006/results_single​/sect_01_table.01.pdf. Prevalence: http://seer​.cancer.gov​/csr/1975_2006/results_merged​/topic_prevalence.pdf.

As defined by SEER, complete prevalence represents the number or proportion of people alive on a certain day who have been diagnosed with a disease, regardless of when the condition was diagnosed.

From: 2, Profile of Rare Diseases

Cover of Rare Diseases and Orphan Products
Rare Diseases and Orphan Products: Accelerating Research and Development.
Institute of Medicine (US) Committee on Accelerating Rare Diseases Research and Orphan Product Development; Field MJ, Boat TF, editors.
Washington (DC): National Academies Press (US); 2010.
Copyright © 2010, National Academy of Sciences.

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