Late relapse from cutaneous stage I malignant melanoma

Area of Science:

• Oncology
• Dermatology
• Cancer Research

Background:

• Cutaneous malignant melanoma is a significant public health concern.
• Understanding the long-term behavior of melanoma, including late recurrence, is crucial for patient management.

Purpose of the Study:

• To determine the incidence of late recurrence in stage I cutaneous malignant melanoma.
• To identify predictors of late recurrence and analyze prognostic factors.
• To evaluate survival outcomes following late recurrence.

Main Methods:

• Retrospective analysis of 1,283 patients with stage I cutaneous malignant melanoma.
• Minimum ten-year follow-up period.
• Assessment of prognostic factors including anatomic site, tumor thickness, ulceration, and surgical treatment.

Main Results:

• The incidence of late recurrence (≥10 years post-diagnosis) was 2.7%.
• No significant prognostic factors (anatomic site, tumor thickness, ulceration, initial surgery) predicted late recurrence.
• Sex and age did not influence recurrence incidence or prognosis.
• Prognosis after late recurrence depended on recurrence site; distant metastases had poor survival, while local recurrence offered protracted survival in 53% of cases.

Conclusions:

• Late recurrence of cutaneous malignant melanoma is uncommon but significant.
• Predicting late recurrence based on initial tumor characteristics is not feasible.
• Long-term surveillance is essential for detecting local recurrences, which can have a favorable prognosis.