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Two cases of lichen planus pigmentosus presenting with a linear pattern.

Hong S, Shin JH, Kang HY - J. Korean Med. Sci. (2004)

Bottom Line: The patients presented with unilateral linear brown macules on the extremities.These patients, to the best of our knowledge, are the first cases of LPP presenting with a linear pattern.LPP should be considered in the differential diagnosis of linear hyperpigmented skin lesions.

View Article: PubMed Central - PubMed

Affiliation: Department of Dermatology, Ajou University School of Medicine, 5 Wonchon-dong, Paldal-gu, Suwon 442-721, Korea.

ABSTRACT
We report two cases of lichen planus pigmentosus (LPP) that developed in a unilateral linear pattern. The patients presented with unilateral linear brown macules on the extremities. Skin biopsy showed orthokeratosis, basal hydropic degeneration with scarce lymphohistiocytic infiltrates, and numerous melanophages in both patients. These patients, to the best of our knowledge, are the first cases of LPP presenting with a linear pattern. LPP should be considered in the differential diagnosis of linear hyperpigmented skin lesions.

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(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, ×200).
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Figure 2: (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, ×200).

Mentions: A 16-yr-old Korean woman presented with linear dark brown pigmentation on the left arm for one year. She stated that recurrent asymptomatic erythematous papules first appeared and then the lesion had developed into dark brown macules during 1-2 weeks. 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). There was no accompanying oral or nail change. Skin biopsy showed orthokeratosis, focal basal liquefaction, a sparse perivascular inflammatory infiltrate, and pigmentary incontinence, confirming the diagnosis of LPP (Fig. 2B).


Two cases of lichen planus pigmentosus presenting with a linear pattern.

Hong S, Shin JH, Kang HY - J. Korean Med. Sci. (2004)

(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, ×200).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2822256&req=5

Figure 2: (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, ×200).
Mentions: A 16-yr-old Korean woman presented with linear dark brown pigmentation on the left arm for one year. She stated that recurrent asymptomatic erythematous papules first appeared and then the lesion had developed into dark brown macules during 1-2 weeks. 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). There was no accompanying oral or nail change. Skin biopsy showed orthokeratosis, focal basal liquefaction, a sparse perivascular inflammatory infiltrate, and pigmentary incontinence, confirming the diagnosis of LPP (Fig. 2B).

Bottom Line: The patients presented with unilateral linear brown macules on the extremities.These patients, to the best of our knowledge, are the first cases of LPP presenting with a linear pattern.LPP should be considered in the differential diagnosis of linear hyperpigmented skin lesions.

View Article: PubMed Central - PubMed

Affiliation: Department of Dermatology, Ajou University School of Medicine, 5 Wonchon-dong, Paldal-gu, Suwon 442-721, Korea.

ABSTRACT
We report two cases of lichen planus pigmentosus (LPP) that developed in a unilateral linear pattern. The patients presented with unilateral linear brown macules on the extremities. Skin biopsy showed orthokeratosis, basal hydropic degeneration with scarce lymphohistiocytic infiltrates, and numerous melanophages in both patients. These patients, to the best of our knowledge, are the first cases of LPP presenting with a linear pattern. LPP should be considered in the differential diagnosis of linear hyperpigmented skin lesions.

Show MeSH
Related in: MedlinePlus