Reduction in surgical interventions in melanoma.

Area of Science:

• Oncology
• Surgical Oncology
• Dermatology

Background:

• Melanoma surgical practices have evolved, reducing excision margins and questioning the necessity of elective lymph node dissection (ELND) and sentinel lymph node biopsy (SLNB).
• Recent data indicate a low frequency of residual tumor cells in wide local excision (WLE) specimens, especially for less advanced melanomas (pT2 or lower).
• Completely excised primary melanomas show comparable clinical outcomes to those treated with WLE.

Purpose of the Study:

• To evaluate the evolving role of surgical interventions in melanoma management.
• To assess the impact of novel biomarkers and treatment strategies on the necessity of SLNB and other surgical procedures.
• To project future trends in melanoma treatment, focusing on reducing surgical burden.

Main Methods:

• Review of recent studies on melanoma surgical margins, WLE specimen analysis, and clinical outcomes.
• Analysis of the utility of clinicopathological gene expression profilers (CP-GEP) in risk stratification and therapy decisions.
• Evaluation of the benefits of adjuvant and neoadjuvant therapies in different melanoma stages, particularly stage III and IIB/C.

Main Results:

• Wide local excision (WLE) margins have decreased to 1-2 cm, with 97% of patients with pT2 or lower tumors not benefiting from it.
• Clinicopathological gene expression profilers (CP-GEP) can effectively stratify melanoma risk, potentially making SLNB redundant for clinical stage I/II.
• SLNB shows a lack of clear overall survival benefit for adjuvant therapy in stage III and is redundant for anti-PD1 therapy decisions in stage IIB/C.

Conclusions:

• Sentinel lymph node biopsy (SLNB) may soon become obsolete, replaced by standard CP-GEP testing for clinical management.
• Future melanoma treatment will likely involve a significant reduction in surgical interventions.
• CP-GEP testing offers a pathway to simplify follow-up schedules for low-risk patients and reduce overall surgical burden.