J Korean Med Sci.  2004 Feb;19(1):152-154. 10.3346/jkms.2004.19.1.152.

Two Cases of Lichen Planus Pigmentosus Presenting with a Linear Pattern

• Hong S
• Shin JH
• Kang HY

• KMID: 1785713
• DOI: http://doi.org/10.3346/jkms.2004.19.1.152

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.

Keyword

Lichen Planus; Lichen Planus Pigmentosus; Linear Pattern

MeSH Terms

Adolescent
Adult
Biopsy
Female
Human
Hyperpigmentation/diagnosis/pathology
Lichen Planus/*diagnosis/pathology
Skin/pathology

Figure

• 

  Fig. 1 (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,×200).

• 

  Fig. 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).

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