PMC7757303_01
multiple well-circumscribed erythematous nodular hyperkeratosis on scalp (A, B) scar post excision appear closed and the other lesion showed thinning with minimal hyperpigmentation plaque. Four months post-treatment, further significant improvement of the lesions was evident, leaving only minimal hyperpigmentation macules without alopecia (C, D)
PAMJ-37-98-g001.jpg
PMC7757303_01_PAMJ-37-98-g001.jpg
F1
On palpation, the mass was firm in consistency with no tenderness nor discharge (Figure 1 A, B). Follow-up visit one week afterwards showed significant thinning of the lesions and hyperpigmentation plaque (Figure 1 C). Four months post treatment, further significant improvement of the lesions was evident, leaving only minimal hyperpigmentation macules without alopecia (Figure 1 D).
dermoscopic examination showed sharp demarcation, hairpin vessel and milia-like cyst
PAMJ-37-98-g002.jpg
PMC7757303_01_PAMJ-37-98-g002.jpg
F2
Dermoscopic examination showed sharply demarcated border, hyperkeratosis, papillomatosis, hairpin vessel and milia like cyst (Figure 2 A) with no signs of malignancy.
epidermal hyperplasia with hyperkeratosis (A), thick parakeratosis, hypergranulosis, papillomatosis (B) intraepidermal horn cyst (C) and dense inflammatory cell lymphocytes in the upper dermis (D)
PAMJ-37-98-g003.jpg
PMC7757303_01_PAMJ-37-98-g003.jpg
F3
The upper dermis showed dense inflammatory lymphocyte (Figure 3).