Journal
JOURNAL OF THE AMERICAN ACADEMY OF DERMATOLOGY
Volume 72, Issue 1, Pages 54-58Publisher
MOSBY-ELSEVIER
DOI: 10.1016/j.jaad.2014.09.028
Keywords
dysplastic nevus; melanoma; nevus; overall survival; precursor; sentinel lymph node biopsy
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Background: Prior reports indicate a wide range of melanomas in histopathologic contiguity with a nevus, and an associated nevus has unclear prognostic implications in melanoma. Objective: We sought to investigate the relationship among nevus-associated melanomas, sentinel lymph node status, and overall survival. Methods: We conducted a retrospective analysis of 850 patients with cutaneous melanoma and sentinel lymph node removed at Massachusetts General Hospital from 1998 through 2008 and meta-analysis of the literature. Results: Nevus-associated melanomas represented 28% (235/850) of cases and were significantly correlated with younger age (P = .03), truncal site (P = .0005), superficial spreading type (P < .0001), and absent ulceration (P = .005). There was no association with sentinel lymph node status (P = .94) and no survival difference between nevus-associated versus de novo melanoma (P = .41). Meta-analysis of over 4000 cases revealed a similar percentage of associated nevi (32%). Limitations: This was a retrospective study. Conclusions: Approximately 30% of melanomas are associated with a nevus. The presence of a nevus associated with a melanoma has no prognostic implication in sentinel lymph node status or overall survival.
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