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Published on: July 28, 2020
Optimal size of resection margin for thin cutaneous melanoma
Summary
For thin melanomas (less than 0.76 mm), conservative resection margins of 1.0 cm or less are effective. These margins prevent local recurrence and metastases, avoiding the need for skin grafting in most cases.
Area of Science:
- Dermatology
- Surgical Oncology
Background:
- Melanoma treatment guidelines often recommend wide resection margins.
- The optimal margin for thin melanomas (<0.76 mm) remains a subject of investigation.
Purpose of the Study:
- To evaluate the efficacy of conservative resection margins for thin melanomas.
- To determine if narrow margins correlate with local recurrence or metastasis.
Main Methods:
- Retrospective analysis of 62 patients with thin melanomas (<0.76 mm).
- Resection margins ranged from 0.10 to 5.50 cm.
- Follow-up for local recurrence and distant metastases.
Main Results:
- 32% of patients had resection margins of 1.0 cm or less.
- No local recurrence or metastases were observed in any of the 62 patients.
- Resection margin width varied based on tumor location.
Conclusions:
- Conservative resection margins (≤1.0 cm) are adequate for thin melanomas.
- Resection margin size should be guided by anatomical location.
- Skin grafting is generally not required for these cases.

