Reticulated acanthoma with sebaceous differentiation mimicking melanoma

摘要

Reticulated acanthoma with sebaceous differentiation (RASD) is a rare, benign cutaneous tumor with peculiar histopathologic characteristics []. RASD had been described under various synonyms such as superficial epithelioma with sebaceous differentiation, sebocrine adenoma, poroma with sebaceous differentiation, and seborrheic keratosis with sebaceous differentiation []. Clinical differential diagnosis of RASD includes cutaneous superficial epithelial neoplasia such as Bowen’s disease, superficial basal cell carcinoma (BCC) and intraepidermal eccrine poroma []. We report the first case of RASD mimicking both clinically and dermoscopically a melanoma.