Background/objectives: Spitz nevi are melanocytic lesions with clinical, dermoscopic, and histopathologic presentations that may resemble those of melanoma. The evolution of Spitz nevi is a well-known feature. The objectives of this study were to investigate the clinical and dermoscopic features of Spitz nevi and define their evolution.
Methods: A retrospective observational study was performed and 70 Spitz nevi were analyzed using clinical and dermoscopic examination.
Results: Seventy patients were included in the study. The most common dermoscopic pattern was globular (n = 35 [50%]) followed by starburst (n = 24 [34.3%]), reticular (n = 8 [11.4%]), and homogeneous (n = 3 [4.3%]). Follow-up data were available for 27 of 70 patients. Of these, 21 demonstrated evolution on the follow-up images. A stable pattern (no evolution) was noted in 6 of 27 lesions. The patients who exhibited evolution were younger on average than the stable group (p = 0.04).
Conclusion: Based on our study, the most common biologic behavior for Spitz nevi is evolution. Although no significant differences were observed in other clinical features, the inverse relationship between evolution and age is important to consider when attempting to differentiate Spitz nevus from melanoma.
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