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Annals of Surgical Oncology

, Volume 15, Issue 7, pp 2034–2041 | Cite as

A Single-Institution Validation of the AJCC Staging System for Stage IV Melanoma

  • Heather B. Neuman
  • Ami Patel
  • Nicole Ishill
  • Christine Hanlon
  • Mary Sue Brady
  • Allan C. Halpern
  • Alan Houghton
  • Daniel G. CoitEmail author
Melanomas

Abstract

Background

Survival of patients with stage IV melanoma is poor. In the current American Joint Committee on Cancer (AJCC) staging system, site of distant disease and lactate dehydrogenase (LDH) are the only prognostic factors included for stage IV disease. We sought to validate the current AJCC staging system in a contemporary, prospectively collected cohort of patients and explore additional factors that may influence prognosis.

Methods

Our prospective database was searched to identify patients with stage IV melanoma; only patients seen at our institution before developing stage IV disease were included (n = 589). Demographic, clinical, and tumor characteristics were abstracted. Univariate and multivariate assessment of prognostic factors associated with survival were performed by Cox regression.

Results

Overall median survival was 9 months. Differential survival by AJCC substage was observed (P < .001). For each site of disease described within the AJCC staging system, an abnormal LDH level was associated with a poorer prognosis. By multivariate analysis, older age at diagnosis (as a continuous variable, hazard ratio [HR] 1.02, 95% confidence interval [95% CI]) 1.01–1.02), an abnormal LDH (HR 1.42, 95% CI 1.11–1.82), site of disease (lung HR 1.22, 95% CI .89–1.66; other viscera 1.61, 95% CI 1.18–2.21), more than one organ involvement (HR 1.27, 95% CI 1.01–1.60), and more than one metastasis (HR 2.27, 95% CI 1.65–3.14) were independently associated with poorer survival. Sex, antecedent stage, and disease-free interval were not statistically significant.

Conclusion

In our patient cohort, the AJCC staging system was valid. The strongest predictor of survival—the number of metastases present at the diagnosis of stage IV disease—represents a variable to consider in future staging systems.

Keywords

Staging Stage IV melanoma Metastases Survival 

Notes

Acknowledgment

Supported in part by grant 5 T32 HS000066 from the Agency for Healthcare Research and Quality.

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Copyright information

© Society of Surgical Oncology 2008

Authors and Affiliations

  • Heather B. Neuman
    • 1
  • Ami Patel
    • 1
  • Nicole Ishill
    • 2
  • Christine Hanlon
    • 1
  • Mary Sue Brady
    • 1
  • Allan C. Halpern
    • 3
  • Alan Houghton
    • 3
  • Daniel G. Coit
    • 1
    Email author
  1. 1.Gastric and Mixed Tumor Service, Department of SurgeryMemorial Sloan-Kettering Cancer CenterNew YorkUSA
  2. 2.Department of Epidemiology-BiostatisticsMemorial Sloan-Kettering Cancer CenterNew YorkUSA
  3. 3.Department MedicineMemorial Sloan-Kettering Cancer CenterNew YorkUSA

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