PMC2822256_01
(A) A 23-yr-old Korean woman with linear streaks of dark brown macules, consistent with the pattern of Blaschko's lines. (B) Close-up view. (C) Atrophic epidermis, basal liquefaction with sparse lymphohistiocytic infiltrates, and numerous melanophages (H&E stain,x200).
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F1
On examination, she had linear streaks of dark brown macules from the left ankle, across the calf and to the thigh, consistent with the pattern of Blaschko's lines (Fig. 1A, B). Skin biopsy showed atrophic epidermis, basal hydropic degeneration with sparse perivascular lymphohistiocytic infiltrates, and numerous melanophages (Fig. 1C).
PMC2822256_02
(A) A 16-yr-old Korean woman with two linear streaks of dark brown macules. (B) Basal liquefaction, sparse lymphohistiocytic infiltrates, and pigmentary incontinence (H&E stain, x200).
jkms-19-152-g002.jpg
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F2
Examination showed two linear streaks of dark brown macules from the left dorsum of hand to the upper arm probably related to Blaschko's lines (Fig. 2A). Skin biopsy showed orthokeratosis, focal basal liquefaction, a sparse perivascular inflammatory infiltrate, and pigmentary incontinence, confirming the diagnosis of LPP (Fig. 2B).