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Correlation between prognostic factors and increasing age in melanoma
Celia Chao1, Robert C G Martin, Merrick I Ross
1Department of Surgery, Division of Surgical Oncology, James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky 40202, USA.
Annals of Surgical Oncology
|March 3, 2004
Summary
Melanoma patients over 60 have thicker tumors and poorer prognostic factors, yet a lower incidence of sentinel lymph node (SLN) metastasis. This suggests potential differences in melanoma biology or SLN detection in older individuals.
Area of Science:
- Oncology
- Dermatology
- Surgical Pathology
Background:
- Melanoma mortality correlates with patient age.
- Sentinel lymph node (SLN) metastasis is inversely related to age.
- This study investigates the age-related paradox in melanoma prognosis.
Purpose of the Study:
- To analyze the relationship between patient age and key prognostic factors in melanoma.
- To understand the discrepancy between age, mortality, and SLN metastasis in melanoma patients.
Main Methods:
- Prospective, randomized Sunbelt Melanoma Trial involving 79 institutions.
- Inclusion criteria: age 18-70, melanoma Breslow thickness ≥1.0 mm, clinically N0 nodes.
- SLN evaluation via serial histology and S-100 protein immunohistochemistry.
Main Results:
- 3076 patients analyzed with a median 19-month follow-up.
- Increasing age correlated with increased Breslow thickness, ulceration, regression, and male proportion.
- Melanoma incidence of SLN metastasis significantly declined with advancing age.
Conclusions:
- Older melanoma patients exhibit poorer prognostic indicators (thickness, ulceration, regression, male sex).
- A decreasing frequency of SLN metastasis was observed in older age groups.
- Further research is needed to determine if this reflects reduced SLN detection sensitivity or altered melanoma biology (e.g., hematogenous spread) in older individuals.