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          "en" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">&#40;A&#41; Multiple&#44; well-defined dark-red erythematous plaques with scales on the lower thighs&#46; &#40;B&#44; C&#41; Histological features showing focal hyperkeratosis with orthokeratosis&#44; hyperplasia of the granular layer&#44; irregular epidermal hyperproliferation&#44; mild liquefaction degeneration of the basal layers&#44; and edema of dermal papillae&#46; HE&#44; &#40;B&#41; &#215;100&#44; &#40;C&#41; &#215;200&#46; Infiltrating cells were immunoreactive for CD4&#44; &#215;200 &#40;D&#41; and CD8&#44; &#215;200 &#40;E&#41;&#46;</p>"
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    "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">Several types of cutaneous adverse reaction have been reported during anti-programmed cell death &#40;PD&#41;-1 antibody therapy&#46; We describe herein rare cases of lichen planus &#40;LP&#41; which developed during nivolumab therapy for advanced non-small-cell lung cancer &#40;NSCLC&#41;&#46; Both cases involved the lower extremities&#44; and one of which was bullous LP&#46;</p><p id="par0010" class="elsevierStylePara elsevierViewall">Case 1&#58; A 74-year-old female was referred to the Department of Dermatology at Shirakawa Kosei General Hospital&#44; complaining of skin rashes on the lower extremities&#46; She was not taking any medications&#46; She had been treated with nivolumab &#40;3<span class="elsevierStyleHsp" style=""></span>mg&#47;kg&#41; administration every two weeks for NSCLC&#46; After the third infusion&#44; itchy eruptions appeared on the lower extremities&#46; Physical examination showed multiple well-defined&#44; purple-colored keratotic plaques slightly covered with scales on the bilateral lower extremities &#40;<a class="elsevierStyleCrossRef" href="#fig1">Fig&#46; 1</a>A&#41;&#46; Histological examination showed focal hyperkeratosis with parakeratosis&#44; focal loss of the granular layer&#44; irregular epidermal hyperproliferation&#44; and mild liquefaction degeneration of the basal layers of the epidermis with prominent subepidermal edema &#40;<a class="elsevierStyleCrossRef" href="#fig1">Fig&#46; 1</a>B&#44; C&#41;&#46; Mononuclear cells&#44; which were mainly composed of CD4- and CD8-positive T-cells&#44; infiltrated into the upper dermis &#40;<a class="elsevierStyleCrossRef" href="#fig1">Fig&#46; 1</a>D&#44; E&#41;&#46; Direct immunofluorescence was negative for either immunoglobulins or C3 deposition in the epidermal basement membrane&#46; She was thereafter treated with topical corticosteroids without discontinuation of nivolumab&#44; but with insufficient effects&#46;</p><elsevierMultimedia ident="fig1"></elsevierMultimedia><p id="par0015" class="elsevierStylePara elsevierViewall">Case 2&#58; An 81-year-old man was treated with pembrolizumab &#40;3<span class="elsevierStyleHsp" style=""></span>mg&#47;kg&#41; administration every three weeks for NSCLC&#46; After the ninth infusion&#44; he was referred to the Department of Dermatology at Fukushima Medical University Hospital&#44; complaining of itchy skin rashes on the lower extremities&#46; After the twelfth infusion&#44; erythema and multiple well-defined dark-red plaques slightly covered with scales appeared on the lower thighs &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>A&#41;&#46; Histological examination showed focal hyperkeratosis with orthokeratosis&#44; hyperplasia of the granular layer&#44; irregular epidermal hyperproliferation&#44; mild liquefaction degeneration of the basal layers&#44; and edema of dermal papillae &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>B&#44; C&#41;&#46; A band-like infiltrate of inflammatory cells&#44; mainly composed of CD4- and CD8-positive T-cells&#44; was observed in the upper dermis &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>D&#44; E&#41;&#46; He was treated with topical corticosteroids and oral antihistamine without discontinuation of pembrolizumab&#44; which resulted in satisfactory effects&#46;</p><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0020" class="elsevierStylePara elsevierViewall">To date&#44; cases of exacerbation of pre-existing psoriasis or de novo induction of psoriasis&#47;psoriasiform eruptions have been reported during nivolumab therapy&#59; however&#44; induction of LP is rare&#46; There are several reports on LP or lichenoid dermatitis&#46;<a class="elsevierStyleCrossRefs" href="#bib0055"><span class="elsevierStyleSup">1&#8211;6</span></a> In a single institution cohort study&#44; lichenoid reactions were observed in 17&#37; of 82 patients with metastatic melanoma who received anti-PD-1 therapy&#46;<a class="elsevierStyleCrossRef" href="#bib0055"><span class="elsevierStyleSup">1</span></a> Histopathologically&#44; the degree of interface dermatitis and epidermal changes are variable&#46; Bullous LP is commonly seen on the lower extremities&#46; Histopathologically&#44; biopsy from the bullous lesion is characterized by a subepidermal bulla accompanied by classical changes of LP&#46; Bulla formation may be due to the extensive liquefaction and vacuolation of the basal layer&#46; In Case 1&#44; purple-colored keratotic plaques appeared on the lower legs after the initiation of nivolumab&#46; Histopathological examination revealed irregular hyperproliferation of the epidermis with marked subepidermal edema&#46; Wakade et al&#46;<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">5</span></a> reported three cases of PD-1 inhibitor &#40;pembrolizumab&#41; induced bullous LP-like reactions after 2&#8211;22 cycles of administration&#46; Two of the patients had NSCLC&#44; and the other had melanoma&#46; Biolo et al&#46;<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">6</span></a> recently reported an unusual case of linear bullous LP unilaterally involved the lower extremity under treatment with nivolumab&#46;</p><p id="par0025" class="elsevierStylePara elsevierViewall">It has been suggested that the pathogenesis of LP is due to epidermal damage caused by autoreactive cytotoxic CD8&#43; T-cells&#44; mediated by interferon-&#947; &#40;IFN-&#947;&#41;&#46; In murine LP models&#44; prominent expression of PD-L1 in keratinocytes is suggested to play a protective role against cytotoxic CD8&#43; T-cells&#46;<a class="elsevierStyleCrossRef" href="#bib0085"><span class="elsevierStyleSup">7</span></a> In addition&#44; in vitro studies showed that administration of anti-PD-1 antibodies induced increased production of IFN-&#947; from peripheral blood mononuclear cells of patients with oral LP&#46;<a class="elsevierStyleCrossRef" href="#bib0090"><span class="elsevierStyleSup">8</span></a> Komori et al&#46; recently reported a case which developed LP focally in an irradiated area&#44; suggesting Koebner phenomenon&#46;<a class="elsevierStyleCrossRef" href="#bib0095"><span class="elsevierStyleSup">9</span></a> They speculated a close relationship between anti-PD-1 therapy plus radiotherapy and the development of LP&#46; Another recent report showed an increased mRNA expression of granzyme B and IFN-&#947; after nivolumab treatment&#46;<a class="elsevierStyleCrossRef" href="#bib0100"><span class="elsevierStyleSup">10</span></a> Inhibition of PD-1 may induce epidermal basal layer damage with prominent edema leading to bullous LP&#44; mediated by IFN-&#947; and other molecules&#46;</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Conflict of interest</span><p id="par0030" class="elsevierStylePara elsevierViewall">The authors have no conflicts of interest directly relevant to the content of this article&#46;</p></span></span>"
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Case and Research Letter
Bullous and Non-Bullous Lichen Planus During Anti PD-1 Therapy for Lung Cancer
Liquen plano bulloso y no-ampolloso durante la terapia anti PD-1 para el cáncer de pulmón
Y. Hanami
Corresponding author
yuka-66@fmu.ac.jp

Corresponding author.
, T. Yamamoto
Department of Dermatology, Fukushima Medical University, Fukushima, Japan
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          "en" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">&#40;A&#41; Multiple&#44; well-defined dark-red erythematous plaques with scales on the lower thighs&#46; &#40;B&#44; C&#41; Histological features showing focal hyperkeratosis with orthokeratosis&#44; hyperplasia of the granular layer&#44; irregular epidermal hyperproliferation&#44; mild liquefaction degeneration of the basal layers&#44; and edema of dermal papillae&#46; HE&#44; &#40;B&#41; &#215;100&#44; &#40;C&#41; &#215;200&#46; Infiltrating cells were immunoreactive for CD4&#44; &#215;200 &#40;D&#41; and CD8&#44; &#215;200 &#40;E&#41;&#46;</p>"
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    "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">Several types of cutaneous adverse reaction have been reported during anti-programmed cell death &#40;PD&#41;-1 antibody therapy&#46; We describe herein rare cases of lichen planus &#40;LP&#41; which developed during nivolumab therapy for advanced non-small-cell lung cancer &#40;NSCLC&#41;&#46; Both cases involved the lower extremities&#44; and one of which was bullous LP&#46;</p><p id="par0010" class="elsevierStylePara elsevierViewall">Case 1&#58; A 74-year-old female was referred to the Department of Dermatology at Shirakawa Kosei General Hospital&#44; complaining of skin rashes on the lower extremities&#46; She was not taking any medications&#46; She had been treated with nivolumab &#40;3<span class="elsevierStyleHsp" style=""></span>mg&#47;kg&#41; administration every two weeks for NSCLC&#46; After the third infusion&#44; itchy eruptions appeared on the lower extremities&#46; Physical examination showed multiple well-defined&#44; purple-colored keratotic plaques slightly covered with scales on the bilateral lower extremities &#40;<a class="elsevierStyleCrossRef" href="#fig1">Fig&#46; 1</a>A&#41;&#46; Histological examination showed focal hyperkeratosis with parakeratosis&#44; focal loss of the granular layer&#44; irregular epidermal hyperproliferation&#44; and mild liquefaction degeneration of the basal layers of the epidermis with prominent subepidermal edema &#40;<a class="elsevierStyleCrossRef" href="#fig1">Fig&#46; 1</a>B&#44; C&#41;&#46; Mononuclear cells&#44; which were mainly composed of CD4- and CD8-positive T-cells&#44; infiltrated into the upper dermis &#40;<a class="elsevierStyleCrossRef" href="#fig1">Fig&#46; 1</a>D&#44; E&#41;&#46; Direct immunofluorescence was negative for either immunoglobulins or C3 deposition in the epidermal basement membrane&#46; She was thereafter treated with topical corticosteroids without discontinuation of nivolumab&#44; but with insufficient effects&#46;</p><elsevierMultimedia ident="fig1"></elsevierMultimedia><p id="par0015" class="elsevierStylePara elsevierViewall">Case 2&#58; An 81-year-old man was treated with pembrolizumab &#40;3<span class="elsevierStyleHsp" style=""></span>mg&#47;kg&#41; administration every three weeks for NSCLC&#46; After the ninth infusion&#44; he was referred to the Department of Dermatology at Fukushima Medical University Hospital&#44; complaining of itchy skin rashes on the lower extremities&#46; After the twelfth infusion&#44; erythema and multiple well-defined dark-red plaques slightly covered with scales appeared on the lower thighs &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>A&#41;&#46; Histological examination showed focal hyperkeratosis with orthokeratosis&#44; hyperplasia of the granular layer&#44; irregular epidermal hyperproliferation&#44; mild liquefaction degeneration of the basal layers&#44; and edema of dermal papillae &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>B&#44; C&#41;&#46; A band-like infiltrate of inflammatory cells&#44; mainly composed of CD4- and CD8-positive T-cells&#44; was observed in the upper dermis &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>D&#44; E&#41;&#46; He was treated with topical corticosteroids and oral antihistamine without discontinuation of pembrolizumab&#44; which resulted in satisfactory effects&#46;</p><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0020" class="elsevierStylePara elsevierViewall">To date&#44; cases of exacerbation of pre-existing psoriasis or de novo induction of psoriasis&#47;psoriasiform eruptions have been reported during nivolumab therapy&#59; however&#44; induction of LP is rare&#46; There are several reports on LP or lichenoid dermatitis&#46;<a class="elsevierStyleCrossRefs" href="#bib0055"><span class="elsevierStyleSup">1&#8211;6</span></a> In a single institution cohort study&#44; lichenoid reactions were observed in 17&#37; of 82 patients with metastatic melanoma who received anti-PD-1 therapy&#46;<a class="elsevierStyleCrossRef" href="#bib0055"><span class="elsevierStyleSup">1</span></a> Histopathologically&#44; the degree of interface dermatitis and epidermal changes are variable&#46; Bullous LP is commonly seen on the lower extremities&#46; Histopathologically&#44; biopsy from the bullous lesion is characterized by a subepidermal bulla accompanied by classical changes of LP&#46; Bulla formation may be due to the extensive liquefaction and vacuolation of the basal layer&#46; In Case 1&#44; purple-colored keratotic plaques appeared on the lower legs after the initiation of nivolumab&#46; Histopathological examination revealed irregular hyperproliferation of the epidermis with marked subepidermal edema&#46; Wakade et al&#46;<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">5</span></a> reported three cases of PD-1 inhibitor &#40;pembrolizumab&#41; induced bullous LP-like reactions after 2&#8211;22 cycles of administration&#46; Two of the patients had NSCLC&#44; and the other had melanoma&#46; Biolo et al&#46;<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">6</span></a> recently reported an unusual case of linear bullous LP unilaterally involved the lower extremity under treatment with nivolumab&#46;</p><p id="par0025" class="elsevierStylePara elsevierViewall">It has been suggested that the pathogenesis of LP is due to epidermal damage caused by autoreactive cytotoxic CD8&#43; T-cells&#44; mediated by interferon-&#947; &#40;IFN-&#947;&#41;&#46; In murine LP models&#44; prominent expression of PD-L1 in keratinocytes is suggested to play a protective role against cytotoxic CD8&#43; T-cells&#46;<a class="elsevierStyleCrossRef" href="#bib0085"><span class="elsevierStyleSup">7</span></a> In addition&#44; in vitro studies showed that administration of anti-PD-1 antibodies induced increased production of IFN-&#947; from peripheral blood mononuclear cells of patients with oral LP&#46;<a class="elsevierStyleCrossRef" href="#bib0090"><span class="elsevierStyleSup">8</span></a> Komori et al&#46; recently reported a case which developed LP focally in an irradiated area&#44; suggesting Koebner phenomenon&#46;<a class="elsevierStyleCrossRef" href="#bib0095"><span class="elsevierStyleSup">9</span></a> They speculated a close relationship between anti-PD-1 therapy plus radiotherapy and the development of LP&#46; Another recent report showed an increased mRNA expression of granzyme B and IFN-&#947; after nivolumab treatment&#46;<a class="elsevierStyleCrossRef" href="#bib0100"><span class="elsevierStyleSup">10</span></a> Inhibition of PD-1 may induce epidermal basal layer damage with prominent edema leading to bullous LP&#44; mediated by IFN-&#947; and other molecules&#46;</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Conflict of interest</span><p id="par0030" class="elsevierStylePara elsevierViewall">The authors have no conflicts of interest directly relevant to the content of this article&#46;</p></span></span>"
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          "en" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Purple-colored keratotic plaques scattered on the lower leg&#46; &#40;B&#41; Histological features showing irregular epidermal proliferation with subepidermal edema and cellular infiltrates in the upper dermis&#46; Hematoxylin&#8211;eosin stain &#91;HE&#93;&#44; &#215;100&#46; &#40;C&#41; Higher magnification showing liquefaction degeneration of the basal layers of the epidermis&#46; HE&#44; &#215;200&#46; Infiltrating cells were immunoreactive for CD4&#44; &#215;200 &#40;D&#41; and CD8&#44; &#215;200 &#40;E&#41;&#46;</p>"
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ISSN: 00017310
Original language: English
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