Ann Dermatol.  2008 Dec;20(4):254-256. 10.5021/ad.2008.20.4.254.

Two Cases of Lichen Planus Pigmentosus-inversus Arising from Long-standing Lichen Planus-inversus

• Kim BS
• Park KD
• Chi SG
• Ko HC
• Lee WJ
• Lee SJ
• Kim DW

• KMID: 2156408
• DOI: http://doi.org/10.5021/ad.2008.20.4.254

Abstract

Lichen planus pigmentosus-inversus (LPP-inversus) is an extremely rare variant of lichen planus (LP), and only a few cases have been reported. Its course is characterized by exacerbations and remissions, and it is known to be more chronic than classical LP is. We report two cases of LPP-inversus and offer the suggestion that LPP-inversus may originate from LP of flexural areas.

Keyword

Lichen planus-inversus; Lichen planus pigmentosus-inversus

MeSH Terms

Lichen Planus
Lichens

Figure

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  Fig. 1 (A) Violaceous annular patches and scattered rice grain-sized macules are seen in the left inguinal region. (B) Mild hydropic degeneration of the basal keratinocytes and marked, band-like dermal lymphocytic infiltration with pigment incontinence are seen on histopathological examination (H&E, &200).

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  Fig. 2 Several brownish-to-purplish papules and macules are located in the axillae (A) and in the right inner thigh (B). Histopathological examination of the papular lesions in the axilla shows dense, band-like, predominantly lymphocytic infiltrates in the papillary dermis and vacuolar alteration of the basal layer with some necrotic keratinocytes (C) (H&E, ×200).

Reference

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