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Peripheral Palisading in Melanoma Mimicking Basal Cell Carcinoma: A Case Report.

The incidence of melanoma has been increasing over the past few decades. Because of its phenotypic diversity, melanoma may present in various clinical and histopathological manifestations, and it can mimic varieties of skin lesions from benign to malignant and from epithelial to nonepithelial. Accurate diagnosis of melanoma is crucial because delayed treatment leads to worse prognoses. Here, we describe a case of melanoma in an 82-year-old man with an unusual histopathologic presentation, namely, the presence of neoplastic aggregates with a palisaded periphery resembling basal cell carcinoma.