We present a 6-week-old female infant from the Lao People's Democratic Republic with a large, red, exophytic scalp mass and numerous flesh-colored verrucous plaques on her face and the right half of her body since birth. The clinical and pathological findings are consistent with the new phenotype of the large, polypoid types of nevus sebaceous.

Folliculosebaceous cystic hamartoma is a distinctive cutaneous hamartoma composed of follicular, sebaceous, and mesenchymal components. The lesions are most commonly found on the face and scalp of young adults, with approximately 30% occurring in the nasal or paranasal regions of the face. The clinical differential diagnoses are extensive and include epidermoid cyst, dermal nevus, soft fibroma,...

Epidermal nevi are hamartomas that are characterized by hyperplasia of epidermis and adnexal structures. These nevi may be classified into a number of distinct variants, which are based on clinical morphology, extent of involvement, and the predominant epidermal structure in the lesion. Variants include verrucous epidermal nevus, nevus sebaceous, nevus comedonicus, eccrine nevus, apocrine nevus...

Case report. A 24-year-old male patient reported he had undergone removal of a brownish lesion recently appeared on a congenital lesion of the scalp and noticed its recurrence one month after the removal. The dermatological examination showed a just raised, grossly rectangular, 2 x 1.5 cm yellow plaque, with grainy surface and irregular borders; in the middle of the plaque there was no hair but...