Lymph node retrieval rates in melanoma: a quality assessment parameter

Area of Science:

• Surgical Oncology
• Melanoma Research
• Quality Improvement in Cancer Care

Background:

• Regional lymph node dissection (rlnd) is crucial for melanoma with nodal metastasis, potentially improving survival.
• Higher lymph node retrieval rates (lnrr) correlate with better local disease control.
• A standardized definition for an adequate lnrr is currently lacking, hindering its use as a quality metric.

Purpose of the Study:

• To analyze lymph node retrieval rates (lnrr) in patients undergoing regional lymph node dissection (rlnd) for malignant cutaneous melanoma.
• To establish benchmarks for lnrr at a tertiary care center.
• To assess the potential of lnrr as a quality indicator for melanoma surgical management.

Main Methods:

• Retrospective cohort analysis of 207 patients who underwent rlnd for cutaneous melanoma between 2000-2010.
• Data collection included indications for rlnd (positive sentinel lymph node biopsy or clinical lymphadenopathy) and recorded lnrrs.
• Analysis of median and 10th percentile lnrr for axillary, inguinal, and ilioinguinal dissections.

Main Results:

• Median lnrrs were 24 (axillary), 12 (inguinal), and 16 (ilioinguinal) nodes.
• 10th percentile lnrrs were 14, 8, and 11 nodes, respectively.
• Similar lnrrs were observed between patients with positive sentinel lymph nodes and those with clinical lymphadenopathy.

Conclusions:

• The observed lymph node retrieval rates (lnrr) align with those reported at other specialized melanoma centers.
• Establishing a minimum acceptable lnrr is a viable quality assessment parameter for surgical management of melanoma with nodal metastasis.