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Updated: Jan 27, 2026

Sentinel Lymph Node Mapping and Biopsy for Endometrial Cancer at Early Stage with Laparoscopy
Published on: August 19, 2021
Does sentinel lymph node status have prognostic significance in patients with acral lentiginous melanoma?
Sabrina N Pavri1, Gang Han2, Sajid Khan3
1Aesthetic and Reconstructive Surgery Institute, UF Health Cancer Center-Orlando Health, Orlando, Florida.
Background:
The prognostic benefit of sentinel lymph node biopsy (SLNB) and factors predictive of survival specifically in patients with acral lentiginous melanoma (ALM) are unknown.
Methods:
The SEER database was queried for ALM cases that underwent SLNB from 1998 to 2013. Clinicopathological factors were correlated with SLN status, overall survival (OS), and melanoma-specific survival (MSS).
Results:
Median age for the 753 ALM study patients was 65 years, and 48.2% were male. Median thickness was 2 mm with 38.1% of cases having ulceration. SLN metastases were detected in 194 of 753 cases (25.7%). Multivariable analysis showed that thickness, Clark level IV-V, and ulceration significantly predicted for SLN metastasis (P < 0.05). For patients with positive SLN, 5-year OS and MSS were significantly worse at 48.1% and 58.9%, respectively, compared with 78.7% and 88.5%, respectively, for patients with negative SLN (P < 0.0001). On multivariable analyses, older age, male gender, increasing thickness, ulceration, and a positive SLN significantly predicted for worse OS and MSS (all P < 0.05).
Conclusion:
This study confirms the important role of SLNB in ALM. SLN metastases are seen in 25.7% of ALM cases, providing significant prognostic information. In addition, thickness, ulceration status, and SLNB status significantly predict survival in patients with ALM.
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