PMC5771732_01
Hyperpigmented and hypopigmented macular dyspigmentation on abdomen and forearms formed a reticulate pattern.
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PMC5771732_01_gr1.jpg
fig1
There was no atrophy, erythema, or telangiectasia (Fig 1).
Increased melanin granules and pigmentation in the basal cell layer of the epidermis (indicated by the arrows).(Hematoxylin-eosin stain; original magnification: x200.)
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PMC5771732_01_gr2.jpg
fig2
Skin biopsy of hyperpigmented lesions on the left forearm showed increased melanin granules and pigmentation in the basal cell layer of the epidermis and perivascular lymphocytes and melanocytes within the papillary dermis (Fig 2).
A, Left forearm before treatment. B, Area treated with 755-nm Q-switched alexandrite laser (within the pink line) on the left forearm 11 months after a single laser treatment.
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PMC5771732_01_gr3.jpg
fig3
Compared with the lentigines before the treatment (Fig 3, A), no recurrence was noted at the 11-month follow-up after 1 treatment session (Fig 3, B).