Multiple lymphatic basin drainage from cutaneous melanoma as a prognostic factor

Area of Science:

• Oncology
• Dermatology
• Surgical Pathology

Background:

• The prognostic significance of multiple lymphatic basin drainage (MLBD) in cutaneous melanoma remains debated.
• Understanding MLBD's impact is crucial for accurate melanoma staging and patient management.

Purpose of the Study:

• To investigate the prognostic differences in cutaneous melanoma based on the presence or absence of MLBD.
• To determine if MLBD is an independent prognostic factor for disease-free survival.

Main Methods:

• A prospective cohort analysis of 112 cutaneous melanoma patients undergoing sentinel lymph node biopsy (SLNB).
• MLBD defined as drainage to two or more nodal basins from a single primary lesion.
• Statistical comparison of demographic/clinical data and multivariate analysis of disease-free survival using logistic regression and Cox models.

Main Results:

• MLBD was associated with male gender and primary tumor location on the trunk.
• Both high Breslow thickness and MLBD correlated with worse disease-free survival in patients with positive and negative SLNB.
• Gender and trunk localization were linked to MLBD presence.

Conclusions:

• Breslow thickness is a significant independent prognostic factor for cutaneous melanoma.
• MLBD is also a statistically significant independent prognostic factor for disease-free survival in cutaneous melanoma patients.
• These findings aid in refining prognostic assessments for melanoma.