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SEER Stat Fact Sheets: T-cell Non-Hodgkin Lymphoma

Cancer: --Choose a Cancer Site-- All Sites Anal Cancer Bladder Bone and Joint Brain and Other Nervous System Breast Cervix Uteri Colon and Rectum Corpus and Uterus, NOS Esophagus Eye and Orbit Kidney and Renal Pelvis Larynx Leukemia    Acute Lymphocytic Leukemia    Chronic Lymphocytic Leukemia    Acute Myeloid Leukemia    Chronic Myeloid Leukemia Liver and Intrahepatic Bile Duct Lung and Bronchus Lymphoma    Hodgkin Lymphoma    Non-Hodgkin Lymphoma      B-cell Non-Hodgkin Lymphoma      T-cell Non-Hodgkin Lymphoma Myeloma Oral Cavity and Pharynx    Tongue Other Endocrine Ovary Pancreas Prostate Skin (excl. Basal and Squamous)    Melanoma of the Skin    Other Non-epithelial Skin Small Intestine Soft Tissue including Heart Stomach Testis Thyroid Vulva  

The following information is based on NCI’s SEER Cancer Statistics Review¹X Close
T-cell Non-Hodgkin Lymphoma Section (http://seer.cancer.gov/csr/ 1975_2009_pops09/results_merged/ sect_19_nhl.pdf)
.Use the links on this page to learn more about each statistic type:

• Incidence
• Survival & Stage
• References

Incidence

SEER Incidence

From 2005-2009, the median age at diagnosis for T-cell non-Hodgkin lymphoma was 59 years of age²X Close
Table I-11 (http://seer.cancer.gov/csr/ 1975_2009_pops09/results_single/ sect_01_table.11_2pgs.pdf). Approximately 6.2% were diagnosed under age 20; 9.4% between 20 and 34; 10.2% between 35 and 44; 15.1% between 45 and 54; 19.1% between 55 and 64; 18.4% between 65 and 74; 16.6% between 75 and 84; and 5.1% 85+ years of age.

The age-adjusted incidence rate was 1.8 per 100,000 men and women per year. These rates are based on cases diagnosed in 2005-2009 from 18 SEER geographic areas.

Trends in Rates

Trends in rates can be described in many ways. Information for trends over a fixed period of time, for example 1996-2009, can be evaluated by the annual percentage change (APC)X Close
The average annual percent change over several years. The APC is used to measure trends or the change in rates over time. For information on how this is calculated, go to Trend Algortihms in the SEER*Stat Help system. The calculation involves fitting a straight line to the natural logarithm of the data when it is displayed by calendar year. . If there is a negative sign before the number, the trend is a decrease; otherwise it is an increase. If there is an asterisk after the APC then the trend was significant, that is, one believes that it is beyond chance, i.e. 95% sure, that the increase or decrease is real over the period 1996-2009. If the trend is not significant, the trend is usually reported as stable or level. Joinpoint analysesX Close
A statistical model for characterizing cancer trends which uses statistical criteria to determine how many times and when the trends in incidence or mortality rates have changed. The results of joinpoint are given as calendar year ranges, and the annual percent change (APC) in the rates over each period can be used over a long period of time to evaluate when changes in the trend have occurred along with the APC which shows how much the trend has changed between each of the joinpoints.

Survival & Stage

SurvivalX Close
Survival examines how long after diagnosis people live. Cancer survival is measured in a number of different ways depending on the intended purpose. Several examples of survival statistics are listed below. can be calculated by different methods for different purposes. The survival statistics presented here are based on relative survivalX Close
A measure of net survival that is calculated by comparing observed (overall) survival with expected survival from a comparable set of people that do not have cancer to measure the excess mortality that is associated with a cancer diagnosis., which measures the survival of the cancer patients in comparison to the general population to estimate the effect of cancer. The overall 5-year relative survival for 2002-2008 from 18 SEER geographic areas was 62.4%. Five-year relative survival by race and sex was: 62.2% for white men; 64.8% for white women; 49.2% for black men; 58.8% for black women.

The stage distributionX Close
Stage provides a measure of disease progression, detailing the degree to which the cancer has advanced. Two methods commonly used to determine stage are AJCC and SEER Summary Stage. The AJCC method (see Collaborative Staging Method) is more commonly used in the clinical settings, while SEER has strived to provide consistent definitions over time with their Local/Regional/Distant staging. is based on Summary Stage 2000.

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References

All statistics in this report are based on SEER incidence statistics. Most can be found within:

Howlader N, Noone AM, Krapcho M, Neyman N, Aminou R, Altekruse SF, Kosary CL, Ruhl J, Tatalovich Z, Cho H, Mariotto A, Eisner MP, Lewis DR, Chen HS, Feuer EJ, Cronin KA (eds). SEER Cancer Statistics Review, 1975-2009 (Vintage 2009 Populations), National Cancer Institute. Bethesda, MD, http://seer.cancer.gov/csr/1975_2009_pops09/, based on November 2011 SEER data submission, posted to the SEER web site, 2012.

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