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Figure 1 :(a) A dark brown nodule with verrucous surface on the back, measuring approximately 1.0 cm; (b) Histopathological examination of the excised specimen revealed a pedunculated tumor with epidermal hyperplasia and irregular hyperkeratotic crusts (H and E, original magnifi cation 10); (c) Proliferation of highly atypical melanocytes of varying sizes was observed with numerous mitoses (H and E, original magnifi cation 400); (d) A reticulated structure with extension of epidermal protrusions and pseudo-horn cysts was observed on the pedicle of the tumor (H and E, original magnifi cation 100)

Figure 1 :(a) A dark brown nodule with verrucous surface on the back, measuring approximately 1.0 cm; (b) Histopathological examination of the excised specimen revealed a pedunculated tumor with epidermal hyperplasia and irregular hyperkeratotic crusts (H and E, original magnifi cation 10); (c) Proliferation
of highly atypical melanocytes of varying sizes was observed with numerous mitoses (H and E, original magnifi cation 400); (d) A reticulated structure with extension of epidermal protrusions and pseudo-horn cysts was observed on the pedicle of the tumor (H and E, original magnifi cation 100)