Patterns of use and survival outcomes of positron emission tomography for initial staging in elderly follicular lymphoma patients.
The role of positron emission tomography (PET) in the initial assessment of follicular lymphoma (FL) has been a topic of debate. We examined the patterns of utilization of PET staging in FL and assessed the association of PET with survival. Using the SEER-Medicare database, we identified 5712 patients diagnosed with first primary FL between 2000 and 2009. Older age, African-American race, poor performance status, B-symptoms and history of anemia were negatively associated with PET staging. Receipt of PET staging was positively associated with treatment at institutions affiliated with research networks and with residence in areas with higher concentrations of nuclear medicine specialists. PET was associated with improved lymphoma-related (HR 0.69, 95% CI: 0.58-0.82) and overall (HR 0.75, 95% CI: 0.68-0.83) survival. Our findings substantiate the use of PET as the standard of care for imaging in FL patients. Further investigation is warranted to identify mechanisms underlying the apparent survival advantage associated with PET staging in FL.
a Surveillance and Health Services Research Program , American Cancer Society , Atlanta , GA , USA.|b Department of Health Policy and Management , Rollins School of Public Health, Emory University , Atlanta , GA , USA.
Ashish
A
Rai
c Department of Lymphoma/Myeloma, Division of Cancer Medicine , The University of Texas MD Anderson Cancer Center , Houston , TX , USA.
Loretta J
LJ
Nastoupil
d Department of Hematology and Medical Oncology , Emory University School of Medicine , Atlanta , GA , USA.
Jessica N
JN
Williams
b Department of Health Policy and Management , Rollins School of Public Health, Emory University , Atlanta , GA , USA.
Joseph
J
Lipscomb
e Department of Epidemiology , Rollins School of Public Health, Emory University , Atlanta , GA , USA.
Kevin C
KC
Ward
b Department of Health Policy and Management , Rollins School of Public Health, Emory University , Atlanta , GA , USA.
David H
DH
Howard
f Department of Radiology , Emory University School of Medicine , Atlanta , GA , USA.
Daniel
D
Lee
g Department of Hematology and Medical Oncology , Winship Cancer Institute, Emory University , Atlanta , GA , USA.
Christopher R
CR
Flowers
D000368:Aged; D000369:Aged, 80 and over; D015897:Comorbidity; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D053208:Kaplan-Meier Estimate; D008224:Lymphoma, Follicular / Q000175:diagnosis* / Q000453:epidemiology / Q000401:mortality* / Q000628:therapy; D008297:Male; D009367:Neoplasm Staging; D011159:Population Surveillance; D000072078:Positron Emission Tomography Computed Tomography; D049268:Positron-Emission Tomography / Q000379:methods; D010818:Practice Patterns, Physicians'; D011379:Prognosis; D016016:Proportional Hazards Models; D018426:SEER Program
D019788:Fluorodeoxyglucose F18
Positron emission tomography; follicular lymphoma; neoplasm staging; patterns of care