Effect of the staging schema on melanoma cancer reporting, 1999 to 2006 - 20/10/11
Abstract |
Background |
Staging schemas have changed multiple times over the past 10 years.
Objective |
We sought to examine the impact of staging schemas on the distribution of stages at diagnosis over time.
Methods |
We examined the stage at diagnosis for melanoma cancer cases diagnosed between 1999 and 2006 using data provided by the Surveillance, Epidemiology, and End Results (SEER) and National Program of Cancer Registries (NPCR) programs. The staging schemas were summary staging 1977 (SS1977), summary staging 2000 (SS2000), derived SS2000, and SEER historic staging systems.
Results |
Melanoma was predominantly staged as a localized disease in all schemas. Using SEER data, the proportion of localized melanomas diagnosed in 2001 to 2003 using SS2000 was about 2.5% lower than the proportion diagnosed in 1999 to 2000 using SS1977, whereas the proportion of cases staged as regional was 2.7% higher using the SS2000 than SS1977. The distribution of stages for cases diagnosed in 2001 to 2003 using SS2000 was similar to that for cases diagnosed in 2004 to 2006 using a derived SS2000. Shift in stage distribution among SS1977, SS2000, and SEER historic staging was found to be about 6% (localized to regional) and about 17.5% (unknown to regional stage). The distribution of changes in stage observed for the SEER cases was not evident for cases from NPCR.
Limitations |
SEER historic staging was not available for NPCR cases.
Conclusion |
Changes in staging rules resulted in cases being moved from the localized to the regional stage and from unknown to the regional stage. Without staging rules that have been consistently applied to melanomas over many years, surveillance of prevention, treatment, and control of this condition is difficult.
Le texte complet de cet article est disponible en PDF.Key words : derived summary staging 2000, malignant melanoma, stages at diagnosis, summary staging 1977, summary staging 2000, Surveillance, Epidemiology, and End Results historic staging
Abbreviations used : derived SS2000, NPCR, SEER, SHSS, SS1977, SS2000
Plan
Publication of this supplement to the JAAD was supported by the Division of Cancer Prevention and Control, Centers for Disease Control and Prevention (CDC). |
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Conflicts of interest: None declared. |
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The opinions or views expressed in this supplement are those of the authors and do not necessarily reflect the opinions, recommendations, or official position of the journal editors or the Centers for Disease Control and Prevention. |
Vol 65 - N° 5S1
P. S95.e1-S95.e10 - novembre 2011 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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