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A case of lichen planus pigmentosus on the axilla
( Kyung Ho Kim ),( Hong Lim Kim ),( Hyun Yi Suh ),( Jae Wook Jeon ),( Ji Young Ahn ),( Mi Youn Park ),( Jai Il Youn ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.1
Lichen planus is a common inflammatory disorder that affects the skin, mucous membranes, nails, and hair. It can be classified by configuration, morphology and involved site. Lichen planus pigmentosus is a variant of lichen planus characterized by hyperpigmented, dark-brownish macules in face and flexural folds such as neck, axilla, inframammary region and groin. It tends to occur in patients with darker pigmented skin. It may be unilateral, and usually involving less than 10% body surface area and size varies from several mm to several cm, oval in shape, and may follow lines of Blaschko. It can be associated with pruritus but much milder than in classic lichen planus. Histologically, it shows compact orthokeratosis, wedge-shaped hypergranulosis withirregular acanthosis and vaculoar alteration of the basal layer as classic lichen planus and additionally shows scattered melanophages and melanin pigment incontinence. And it accompanies with band-like dermal lymphocytic infiltration in papillary dermis. Foreign 36 year old male with dark skin type visited our clinic with irregular margined confluenting blackish papuloplaque on the right axilla. Biopsy confirmed as lichen planus pigmentosus. And patient was also diagnosed with annular lichen planus in configuration and lichen planus inversus according to the involved site.
An atypical case of lichen striatus showing clinical features of lichen planus pigmentosus
( Seungkeol Yang ),( Bo Ri Kim ) 대한피부과학회 2019 대한피부과학회 학술발표대회집 Vol.71 No.1
Lichen striatus is a rare, self-limited dermatosis prevalent in children. Blaschkoid linear distribution of flat-topped papules is a well-known feature of the disorder. Lichenoid reaction with perivascular and appendageal lymphocytic infiltrate is a classic pathologic finding of the disease. On the other hand, lichen planus pigmentosus is a variant of lichen planus with characteristic hyperpigmented dark-brown macules. A 31-month-old girl visited our clinic with flat-topped pink-to-brown papules on left thigh and knee lasting more than 3 months despite application of topical steroids. Punch biopsy was executed at the most severe site of the lesion. The pathologic specimen showed lichenoid dermatitis pattern with perivascular and periadnexal lymphocytic infiltration. The biopsy was best matched with the diagnosis of lichen striatus. The patient started treatment with prednicarbate lotion and tacrolimus ointment. However, during the treatment, the lesion exacerbated into confluent purple to dark-brown colored patches. The developed lesion was clinically suspicious for lichen planus pigmentosus. The lesion gradually faded over more than three months with use of tretinoin cream. Herein, we present a case of lichen striatus with atypical features resembling lichen planus pigmentosus.
Lichen planus pigmentosus-inversus presenting as acanthosis nigricans
( Sue Jeong Kim ),( Hae Eul Lee ),( Young Lee ),( Young Joon Seo ),( Jeung Hoon Lee ),( Myung Im ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.1
Lichen planus pigmentosus-inversus is a rare variant of lichen planus pigmentosus that is characterized by dark brown to violaceous macules or patches on the flexuralareas. To our knowledge, lichen planus pigmentosus- inversus presenting as acanthosis nigricans has never been reported. A 54-year-old woman presented with symmetrical ill-defined gray-brown, velvety plaques on the axillae, inframammary folds, and abdomen 3 years earlier. Clinically, it resembled acanthosis nigricans. The medical history was non-contributory and there was no weight gain. Histological examination revealed vacuolar degeneration of the basal layer and dense lichenoid lymphocytic infiltrations with dermal melanophages. Based on the histopathological features, we reached a diagnosis of lichen planus pigmentosus-inversus. The patient was treated with acitretin, cyclosporin, topical steroid, and tacrolimus; the lesions improved slightly, but remained. Here, we report a case of lichen planus pigmentosus- inversus that presented as acanthosis nigricans.
Rapidly improved lichen planus pigmentosus inversus after oral isotretinoin
( Ji Won Kim ),( Jung-im Na ) 대한피부과학회 2019 대한피부과학회 학술발표대회집 Vol.71 No.1
Lichen planus pigmentosus-inversus is a rare variant of lichen planus pigmentosus (LPP). It occurs on intertriginous areas with hyperpigmented macules and patches with a slow progression over several years, usually without spontaneous regression. 57 year-old-woman presented with extensive hyperpigmented erythematous patches, affecting lower back and intertriginous areas including axilla, inguinal creases and popliteal fossa. Skin biopsy showed interface dermatitis with dermal melanophages. Based on the clinical and histopathological finding, a diagnosis of LPP-inversus was made. To reduce the inflammation, oral methylprednisolone 12 mg/day was administered for one week, but erythema persisted. Oral isotretinoin 20mg/day was then administered. Marked improvement of erythema and pigmentation was observed at one month after oral isotretinoin. There are no established treatment methods for LPP and LPP-inversus, yet. Topical and oral corticosteroids as well as topical tacrolimus have been used for clearing inflammation. Isotretinoin has been recently reported to stabilize LPP and decrease pigmentation of LPP. We experienced a rapid improvement of LPP-inversus with oral isotretinoin and suggest isotretinoin as a possible treatment option for LPP and LPP-inversus
( Joon Hee Kim ),( Ji Yun Jang ),( Myeong Hyeon Yang ),( Hyun Hwangbo ),( Min Soo Jang ),( Kee Suck Suh ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.1
Lichen planus pigmentosus (LPP), a rare variant of lichen planus (LP), is characterized by dark-brownish macules on sun-exposed area, especially in dark skinned individuals. On histologic findings, epidermal atrophy and prominent dermal pigment incontinence are seen. The term of LPP-inversus was proposed to describe rare cases of LPP arising on intertriginous area like axilla and groin. And among LP which usually affects wrist and ankle, extremely rare cases occurred on intertriginous area and were proposed to be called LP-inversus. A 49-year-old female presented with brownish papules and plaques on the left groin. Dermoscopic findings of papule showed blue-white colored Wickham striae and histologic findings showed hyperkeratosis, hypergranulosis, saw-tooth appearance of rete ridge in epidermis and marked lichenoid inflammatory cell infiltration in upper dermis. Dermoscopic findings of plaque showed linear, perifollicular and peppered pigmentation, and multiple white dots. Histologic findings showed epidermal thinning and lichenoid lymphohistiocytic infiltration with prominent pigment incontinence in upper dermis. The diagnosis of LPP-inversus accompanied by LP-inversus was made. The typical dermoscopic finding of LP is Wickham striae and those of LPP-inversus are perifollicular, linear, and peppered pigmentation. Herein, we report a rare case of LPP-inversus accompanied by LP-inversus with its characteristic dermoscopic findings.
A Case of Lichen Planus Pigmentosus-inversus in a Korean Patient
Ye-Jin Jung,Yoon Hee Lee,Sung-Yul Lee,이원수 대한피부과학회 2011 Annals of Dermatology Vol.23 No.1
Lichen planus pigmentosus-inversus is a rare variant of lichen planus pigmentosus. The eruption of lichen planus pigmentosus-inversus occurs mainly in the flexural regions and presents with brownish macules and patches. Here we describe the case of a 31-year-old Korean woman who presented with hyperpigmented lesions over her antecubital and popliteal area and groin. Physical examination revealed multiple brownish macules and patches on the intertriginous area without pruritis, and histologic findings showed a regressive pattern of lichen planus. These clinical and histological findings were consistent with a diagnosis of lichen planus pigmentosus-inversus. (Ann Dermatol 23(1)61∼63, 2011)
Two Cases of Lichen Planus Pigmentosus-inversus Arising from Long-standing Lichen Planus-inversus
김병수,박경덕,지성근,고현창,이원주,이석종,김도원 대한피부과학회 2008 Annals of Dermatology Vol.20 No.4
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.
( Byung Soo Kim ),( Kyung Duck Park ),( Seong Geun Chi ),( Hyun Chang Ko ),( Weon Ju Lee ),( Seok Jong Lee ),( Do Won Kim ) 대한피부과학회 2008 Annals of Dermatology Vol.20 No.4
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. (Ann Dermatol (Seoul) 20(4) 254∼256, 2008)