A 62-year-old woman affected with high blood pressure, diabetes, and dyslipidemia was diagnosed with breast cancer in 2010 and treated with surgery, radiotherapy, and chemotherapy. She had been in complete remission until the present. She presented with a bleeding papule on the right scapula of 3-month duration ( Fig. 1). On clinical examination, a black papule was discovered, measuring 0.8 cm in diameter, with a smooth surface, irregular edges and clear borders, hard consistency, and slightly infiltrated. It was surgically removed.
HISTOPATHOLOGICAL FINDINGSThe histopathological examination revealed a dermal tumor with nodular aspect, contacting and ulcerating the epidermis, and which was composed of lobules of basaloid cells with matrical and supramatrical differentiation (Fig. 2). Many mitotic figures were evident. Dendritic melanocytes were mixed with those cells. The presence of shadow cells was evident among the lobules (Fig. 3). There were some FIGURE 1. Bleeding papule on the right scapula.FIGURE 2. Dermal tumor contacting and ulcerating the epidermis.FIGURE 3. Matrical and supramatrical cells mixed with dendritic melanocytes and foci of shadow cells.
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