case_images: PMC4868933_01
case_images: Solitary erythematous, slightly verrucous nodule, 3 cm in diameter, arising on a yellowish, verrucous plaque measuring 3 x 6 cm on the left frontoparietal scalp.
case_images: cde-0008-0080-g01.jpg
case_images: PMC4868933_01_cde-0008-0080-g01.jpg
case_images: F1
case_images: Physical examination revealed a solitary, slightly verrucous erythematous nodule, 3 cm in diameter and covered with scale and crust arising on a hairless, yellowish verrucous plaque measuring 3 x 6 cm, located on the left frontoparietal region of the scalp (fig. 1).
case_images: Histopathologic findings demonstrate mild epidermal papillomatosis associated with increased sebaceous gland and abortive hair follicles. HE. Original magnification x100.
case_images: cde-0008-0080-g02.jpg
case_images: PMC4868933_01_cde-0008-0080-g02.jpg
case_images: F2
case_images: The skin biopsy specimen obtained from the yellowish verrucous plaque showed mild epidermal papillomatosis associated with increased sebaceous gland and abortive hair follicles, consistent with nevus sebaceous (fig. 2).
case_images: Histopathologic findings showing that the tumor consists of uniformly small cuboidal cells, forming anastomosing bands and ductal lumen emanating from the epidermis embedded in a fibrovascular stroma. a HE. Original magnification x100. b HE. Original magnification x400.
case_images: cde-0008-0080-g03.jpg
case_images: PMC4868933_01_cde-0008-0080-g03.jpg
case_images: F3
case_images: Another biopsy specimen obtained from the erythematous nodule revealed that the tumor consisted of uniformly small cuboidal cells, forming anastomosing bands and ductal lumen embedded in a fibrovascular stroma, compatible with eccrine poroma (fig. 3a, fig. 3b).