PMC4868933_01
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.
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PMC4868933_01_cde-0008-0080-g01.jpg
F1
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).
Histopathologic findings demonstrate mild epidermal papillomatosis associated with increased sebaceous gland and abortive hair follicles. HE. Original magnification x100.
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PMC4868933_01_cde-0008-0080-g02.jpg
F2
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).
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.
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PMC4868933_01_cde-0008-0080-g03.jpg
F3
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).