Key Clinical MessageEccrine spiradenoma is a benign and rare adnexal tumor originating from cutaneous eccrine sweat glands. It usually presents as a solitary lesion. It can have different presentations, including a blaschkoid arrangement which is rare. Malignant transformation is possible and usually occurs after a long period of latency in multifocal types.

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Seborrheic keratoses (SK) are very common benign epidermal tumors. Their pathogenesis has been detected already in 2006 and includes several aetiological factors. The participation of human papilloma virus (HPV) is being discussed. SK of the penis is extremely rare and may be misdiagnosed. Histopathology will help in the diagnosis.

Giant congenital melanocytic nevi (GCMN) are a rare occurrence. They arise from mutations in either BRAF or NRAS genes. The major complications associated with GCMN are malignant melanoma and neurocutaneous melanosis. Management of GCMN is symptomatic. We present a rare case of a 20-year-old woman born with GCMN.

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