Letter - Dermatopathology
Invasive extramammary Paget's disease with lymph node metastases and high-grade B-cell lymphoma
Misato Ueda
, Makoto Omori, Ayumi Sakai
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Department of Plastic Surgery, Yodogawa Christian Hospital, Kunijima, Osaka, Japan
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(B) Aspecto de “céu estrelado” (macrófagos fagocitando fragmentos nucleares em meio à proliferação de linfócitos atípicos). (A e B) mostram linfoma de alto grau. (C) Imunomarcação positiva para MYC (MYC, 40<span class="elsevierStyleHsp" style=""></span>×<span class="elsevierStyleHsp" style=""></span>). (D) Imunomarcação positiva para BCL‐2 (BCL‐2, 40<span class="elsevierStyleHsp" style=""></span>×<span class="elsevierStyleHsp" style=""></span>). (C e D) mostram achados de linfoma de dupla expressão.</p>" ] ] ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "Misato Ueda, Makoto Omori, Ayumi Sakai" "autores" => array:3 [ 0 => array:2 [ "nombre" => "Misato" "apellidos" => "Ueda" ] 1 => array:2 [ "nombre" => "Makoto" "apellidos" => "Omori" ] 2 => array:2 [ "nombre" => "Ayumi" "apellidos" => "Sakai" ] ] ] ] ] "idiomaDefecto" => "pt" "Traduccion" => array:1 [ "en" => array:9 [ "pii" => "S0365059623000132" "doi" => "10.1016/j.abd.2022.04.012" "estado" => "S300" "subdocumento" => "" "abierto" => array:3 [ "ES" => false "ES2" => false "LATM" => false ] "gratuito" => false "lecturas" => array:1 [ "total" => 0 ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S0365059623000132?idApp=UINPBA00008Z" ] ] "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2666275223000383?idApp=UINPBA00008Z" "url" => "/26662752/0000009800000003/v3_202305121556/S2666275223000383/v3_202305121556/pt/main.assets" ] ] "itemSiguiente" => array:18 [ "pii" => "S0365059623000168" "issn" => "03650596" "doi" => "10.1016/j.abd.2022.04.014" "estado" => "S300" "fechaPublicacion" => "2023-05-01" "aid" => "720" "copyright" => "Sociedade Brasileira de Dermatologia" "documento" => "simple-article" "crossmark" => 1 "subdocumento" => "crp" "abierto" => array:3 [ "ES" => false "ES2" => false "LATM" => false ] "gratuito" => false "lecturas" => array:1 [ "total" => 0 ] "en" => array:10 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Letter - Tropical/Infectious and parasitic dermatology</span>" "titulo" => "Mutilating localized cutaneous leishmaniasis caused by <span class="elsevierStyleItalic">Leishmania guyanensis</span>" "tienePdf" => "en" "tieneTextoCompleto" => "en" "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "419" "paginaFinal" => "421" ] ] "contieneTextoCompleto" => array:1 [ "en" => true ] "contienePdf" => array:1 [ "en" => true ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:8 [ "identificador" => "fig0010" "etiqueta" => "Figure 2" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr2.jpeg" "Alto" => 1211 "Ancho" => 1675 "Tamanyo" => 449995 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0070" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Histopathological examination. Hematoxylin & eosin, ×1000. Granulomatous inflammation consisting of plasmocytes, lymphocytes, histiocytes, epithelioid cells, and the presence of rare amastigotes (arrow).</p>" ] ] ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "Dina Fabrício da Silva, Sidharta Quercia Gadelha, Andréa de Souza Cavalcante, Rosilene Viana de Andrade, Jorge Augusto de Oliveira Guerra, Alcidarta dos Reis Gadelha" "autores" => array:6 [ 0 => array:2 [ "nombre" => "Dina Fabrício da" "apellidos" => "Silva" ] 1 => array:2 [ "nombre" => "Sidharta Quercia" "apellidos" => "Gadelha" ] 2 => array:2 [ "nombre" => "Andréa de Souza" "apellidos" => "Cavalcante" ] 3 => array:2 [ "nombre" => "Rosilene Viana de" "apellidos" => "Andrade" ] 4 => array:2 [ "nombre" => "Jorge Augusto de Oliveira" "apellidos" => "Guerra" ] 5 => array:2 [ "nombre" => "Alcidarta dos Reis" "apellidos" => "Gadelha" ] ] ] ] ] "idiomaDefecto" => "en" "Traduccion" => array:1 [ "pt" => array:9 [ "pii" => "S2666275223000474" "doi" => "10.1016/j.abdp.2023.02.019" "estado" => "S300" "subdocumento" => "" "abierto" => array:3 [ "ES" => false "ES2" => false "LATM" => false ] "gratuito" => false "lecturas" => array:1 [ "total" => 0 ] "idiomaDefecto" => "pt" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2666275223000474?idApp=UINPBA00008Z" ] ] "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S0365059623000168?idApp=UINPBA00008Z" "url" => "/03650596/0000009800000003/v3_202305121633/S0365059623000168/v3_202305121633/en/main.assets" ] "itemAnterior" => array:17 [ "pii" => "S036505962300017X" "issn" => "03650596" "doi" => "10.1016/j.abd.2022.04.013" "estado" => "S300" "fechaPublicacion" => "2023-05-01" "aid" => "714" "documento" => "simple-article" "crossmark" => 1 "subdocumento" => "crp" "abierto" => array:3 [ "ES" => false "ES2" => false "LATM" => false ] "gratuito" => false "lecturas" => array:1 [ "total" => 0 ] "en" => array:10 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Letter - Dermatopathology</span>" "titulo" => "Blue rubber bleb nevus syndrome and multiple glomangiomas: report of two cases highlighting the importance of the histological analysis" "tienePdf" => "en" "tieneTextoCompleto" => "en" "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "410" "paginaFinal" => "414" ] ] "contieneTextoCompleto" => array:1 [ "en" => true ] "contienePdf" => array:1 [ "en" => true ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:8 [ "identificador" => "fig0020" "etiqueta" => "Figure 4" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr4.jpeg" "Alto" => 2195 "Ancho" => 2925 "Tamanyo" => 1125723 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0020" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Glomangioma. Dilated vascular spaces lined by glomus cells. (A) Hematoxylin & eosin (×100). (B) Hematoxylin & eosin (×400); (C) Immunohistochemistry positive for smooth muscle actin (×400). (D) Immunohistochemistry positive for caldesmon ×400).</p>" ] ] ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "Elsa Stella Mosquera-Belalcazar, Aline Alves Domingues, Alessandra Coppini, Laura Luzzatto, Ana Elisa Kiszewski" "autores" => array:5 [ 0 => array:2 [ "nombre" => "Elsa Stella" "apellidos" => "Mosquera-Belalcazar" ] 1 => array:2 [ "nombre" => "Aline Alves" "apellidos" => "Domingues" ] 2 => array:2 [ "nombre" => "Alessandra" "apellidos" => "Coppini" ] 3 => array:2 [ "nombre" => "Laura" "apellidos" => "Luzzatto" ] 4 => array:2 [ "nombre" => "Ana Elisa" "apellidos" => "Kiszewski" ] ] ] ] ] "idiomaDefecto" => "en" "Traduccion" => array:1 [ "pt" => array:9 [ "pii" => "S2666275223000401" "doi" => "10.1016/j.abdp.2023.02.013" "estado" => "S300" "subdocumento" => "" "abierto" => array:3 [ "ES" => false "ES2" => false "LATM" => false ] "gratuito" => false "lecturas" => array:1 [ "total" => 0 ] "idiomaDefecto" => "pt" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2666275223000401?idApp=UINPBA00008Z" ] ] "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S036505962300017X?idApp=UINPBA00008Z" "url" => "/03650596/0000009800000003/v3_202305121633/S036505962300017X/v3_202305121633/en/main.assets" ] "en" => array:17 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Letter - Dermatopathology</span>" "titulo" => "Invasive extramammary Paget's disease with lymph node metastases and high-grade B-cell lymphoma" "tieneTextoCompleto" => true "saludo" => "Dear Editor," "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "414" "paginaFinal" => "418" ] ] "autores" => array:1 [ 0 => array:4 [ "autoresLista" => "Misato Ueda, Makoto Omori, Ayumi Sakai" "autores" => array:3 [ 0 => array:4 [ "nombre" => "Misato" "apellidos" => "Ueda" "email" => array:1 [ 0 => "sakuramochi0v0@yahoo.co.jp" ] "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "*" "identificador" => "cor0005" ] ] ] 1 => array:2 [ "nombre" => "Makoto" "apellidos" => "Omori" ] 2 => array:2 [ "nombre" => "Ayumi" "apellidos" => "Sakai" ] ] "afiliaciones" => array:1 [ 0 => array:2 [ "entidad" => "Department of Plastic Surgery, Yodogawa Christian Hospital, Kunijima, Osaka, Japan" "identificador" => "aff0005" ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor0005" "etiqueta" => "⁎" "correspondencia" => "Corresponding author." ] ] ] ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:8 [ "identificador" => "fig0010" "etiqueta" => "Figure 2" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr2.jpeg" "Alto" => 891 "Ancho" => 2508 "Tamanyo" => 519953 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0010" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Clinical findings. A subcutaneous mass in the right inguinal area is observed. (A) Atypical cells with a pale cytoplasm proliferated rapidly, and the findings are similar to those of previous invasive Paget’s disease (Hematoxylin & eosin, ×400).</p>" ] ] ] "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">Extramammary paget’s disease (EMPD) has been associated with other several malignancies.<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a> The relationship between EMPD and secondary malignancies has been frequently reported. Due to increased risks of other malignancies, prolonged follow-up for EMPD and screening for malignancies are recommended. Patients with EMPD of the vulva and perianal regions have an increased risk of malignancies derived from the genitourinary and colorectal systems.<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a> However, other malignancies may also develop. Only a few cases of EMPD with lymphomas have been previously reported.<a class="elsevierStyleCrossRefs" href="#bib0005"><span class="elsevierStyleSup">1,3</span></a> The authors present a case involving a patient who developed high-grade B-cell malignant lymphoma during a follow-up for invasive EMPD with lymph node metastases.</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Case report</span><p id="par0010" class="elsevierStylePara elsevierViewall">An 80-year-old man was referred to our department for <span class="elsevierStyleItalic">in situ</span> EMPD of the scrotal region (<a class="elsevierStyleCrossRef" href="#fig0005">Fig. 1</a>A). Preoperative Computed Tomography (CT) did not reveal metastases. We performed tumor resection with a margin of 10 mm and skin grafting. Pathological examination of the excised specimen revealed invasive EMPD (<a class="elsevierStyleCrossRef" href="#fig0005">Fig. 1</a>B‒D). However, both horizontal and vertical margins were negative. He underwent follow-up in our outpatient department. Approximately two years after surgery, right inguinal lymphadenopathy was observed (<a class="elsevierStyleCrossRef" href="#fig0010">Fig. 2</a>A), with no obvious cutaneous lesions. A lymph node biopsy revealed metastases of EMPD. Lymph node dissection was performed in the inguinal and external iliac artery areas. Histopathologically, 7/12 lymph nodes had evidence of invasive EMPD metastases (<a class="elsevierStyleCrossRef" href="#fig0010">Fig. 2</a>B). Postoperative Radiotherapy (RT) was administered; the patient received a total dose of 46 Gy.</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0015" class="elsevierStylePara elsevierViewall">One month after RT, CT revealed decreased intraperitoneal lymph nodes. However, lymphadenopathies to the para-aortic and left supraclavicular nodes were observed. He did not desire additional RT or systemic chemotherapy and opted for receiving supportive palliative treatment. Subsequently, peritoneal dissemination and multiple intra-abdominal lymph node metastases began to be observed.</p><p id="par0020" class="elsevierStylePara elsevierViewall">Four months after RT, a painful subcutaneous tumor was observed on his right forearm (<a class="elsevierStyleCrossRef" href="#fig0015">Fig. 3</a>A). The tumor was resected for pain relief. Histopathologically, the diffuse proliferation of small round atypical cells was noted (<a class="elsevierStyleCrossRef" href="#fig0015">Fig. 3</a>B). Both CD20 and CD79a, which are specific markers for B-lineage derivation, were positive by immunohistochemistry (<a class="elsevierStyleCrossRef" href="#fig0015">Fig. 3</a>C‒D). Ki-67 was significantly elevated at 99% (<a class="elsevierStyleCrossRef" href="#fig0020">Fig. 4</a>A). Moreover, findings of starry-sky appearance (macrophages phagocytosed spallation was found in the proliferation of atypical lymphocytes) (<a class="elsevierStyleCrossRef" href="#fig0020">Fig. 4</a>B) were found. These findings showed high-grade malignancy. Pathological examination confirmed a high-grade B-cell lymphoma. Immunohistochemistry showed positivity for both MYC and BCL-2, consistent with double-expressor lymphoma (<a class="elsevierStyleCrossRef" href="#fig0020">Fig. 4</a>C‒D). One week later, he was admitted to our department due to deteriorations in his general condition. CT revealed findings suggestive of maxillary sinus, skull, and multiple systemic lesions (<a class="elsevierStyleCrossRef" href="#fig0025">Fig. 5</a>). He received palliative treatment and died 12 days after admission.</p><elsevierMultimedia ident="fig0015"></elsevierMultimedia><elsevierMultimedia ident="fig0020"></elsevierMultimedia><elsevierMultimedia ident="fig0025"></elsevierMultimedia></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Discussion</span><p id="par0025" class="elsevierStylePara elsevierViewall">The prognosis of EMPD, intraepidermal cancer, is favorable in most cases. However, the prognosis of invasive EMPD is poor, especially in cases of lymphovascular invasion.<a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">4</span></a> Lymph node metastases are an important prognostic factor.<a class="elsevierStyleCrossRef" href="#bib0025"><span class="elsevierStyleSup">5</span></a></p><p id="par0030" class="elsevierStylePara elsevierViewall">Other primary tumors may develop secondary to EMPD. The incidence of secondary malignancies is reportedly high (8.6%–42%).<a class="elsevierStyleCrossRefs" href="#bib0010"><span class="elsevierStyleSup">2,6–8</span></a> Invasive EMPD is associated with a higher risk of secondary malignancies than EMPD <span class="elsevierStyleItalic">in situ</span>. Patients with invasive EMPD have a >50% higher risk of developing secondary malignancies following their original diagnosis.<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a> This risk remains significantly elevated over time. Therefore, thorough examination of other tumors during follow-up is recommended in patients with EMPD.<a class="elsevierStyleCrossRef" href="#bib0040"><span class="elsevierStyleSup">8</span></a></p><p id="par0035" class="elsevierStylePara elsevierViewall">It has been frequently reported that EMPD is associated with various malignant tumors.<a class="elsevierStyleCrossRefs" href="#bib0005"><span class="elsevierStyleSup">1,2,8,9</span></a> In particular, it has been reported that there is an increased risk of secondary genitourinary and colorectal tumors in patients with EMPD of the vulvar and perianal regions.<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a></p><p id="par0040" class="elsevierStylePara elsevierViewall">Kiltos et al.<a class="elsevierStyleCrossRef" href="#bib0045"><span class="elsevierStyleSup">9</span></a> conducted a database analysis study in the United States and reported that gastrointestinal, breast and urogenital cancers are the most common secondary malignancies in patients with invasive vulvar Paget’s disease and that the risk of developing secondary malignancies is higher in these patients than in the standard population (controls). The authors also reported that the frequencies of secondary malignancies of the gastrointestinal tract, urinary tract, genital tract, blood, and skin are higher in patients with invasive vulvar EMPD than in the general population. Karam et al.<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a> analyzed the standardized prevalence ratio for the development of secondary malignancies after the initial diagnosis of invasive EMPD and reported that the observed to an expected ratio (observed rate/expected rate) for lymphoma was ≥1, although no significant difference was apparent. However, there are only a few reports of EMPD with lymphoma.<a class="elsevierStyleCrossRefs" href="#bib0005"><span class="elsevierStyleSup">1,3</span></a> Moreover, no study has provided a detailed description.</p><p id="par0045" class="elsevierStylePara elsevierViewall">In our case, lymphadenopathies extending from the right external iliac artery were considered as manifestations of metastases of invasive EMPD. However, the subsequent distant metastases were likely malignant lymphoma. The rapidly enlarging abdominal subcutaneous tissue, maxillary sinus, and skull bone were suggestive of malignant lymphomas.</p><p id="par0050" class="elsevierStylePara elsevierViewall">In our case, immunostaining for MYC and BCL-2 showed positive findings. MYC/BCL-2 co-expression without underlying rearrangements is a new adverse prognostic indicator, termed double‐expressor lymphoma.<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">10</span></a> This patient had an advanced malignancy, and Ki-67 was significantly elevated at 99%. The disease was highly malignant and progressed rapidly.</p><p id="par0055" class="elsevierStylePara elsevierViewall">Invasive EPMD also metastasizes to the lymphatics and may be difficult to be distinguished from malignant lymphoma, as observed in our case. The diagnosis of high-grade B-cell malignant lymphoma was established for the first time based on a resected metastatic skin lesion specimen. This pathological condition significantly affects the treatment, prognosis, and systemic condition of patients.</p><p id="par0060" class="elsevierStylePara elsevierViewall">We believe that patients with invasive EMPD require follow-up, considering the possibility of the development of malignant tumors that can influence the prognosis, in addition to genitourinary and colorectal cancers.</p></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Financial support</span><p id="par0075" class="elsevierStylePara elsevierViewall">None declared.</p></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0030">Authors’ contributions</span><p id="par0080" class="elsevierStylePara elsevierViewall">Misato Ueda: Approval of the final version of the manuscript; design and planning of the study; drafting and editing of the manuscript; collection, analysis, and interpretation of data; effective participation in research orientation; intellectual participation in therapeutic conduct of studied cases; critical review of the literature; critical review of the manuscript.</p><p id="par0085" class="elsevierStylePara elsevierViewall">Makoto Omori: Approval of the final version of the manuscript; design and planning of the study; drafting and editing of the manuscript; effective participation in research orientation; intellectual participation in therapeutic conduct of studied cases; critical review of the manuscript.</p><p id="par0090" class="elsevierStylePara elsevierViewall">Ayumi Sakai: Approval of the final version of the manuscript; design and planning of the study; intellectual participation in therapeutic conduct of studied cases; critical review of the manuscript.</p></span><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0035">Conflicts of interest</span><p id="par0095" class="elsevierStylePara elsevierViewall">None declared.</p></span></span>" "textoCompletoSecciones" => array:1 [ "secciones" => array:6 [ 0 => array:2 [ "identificador" => "sec0005" "titulo" => "Case report" ] 1 => array:2 [ "identificador" => "sec0010" "titulo" => "Discussion" ] 2 => array:2 [ "identificador" => "sec0025" "titulo" => "Financial support" ] 3 => array:2 [ "identificador" => "sec0030" "titulo" => "Authors’ contributions" ] 4 => array:2 [ "identificador" => "sec0035" "titulo" => "Conflicts of interest" ] 5 => array:1 [ "titulo" => "References" ] ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "fechaRecibido" => "2021-08-23" "fechaAceptado" => "2022-04-19" "NotaPie" => array:1 [ 0 => array:2 [ "etiqueta" => "⋆" "nota" => "<p class="elsevierStyleNotepara" id="npar0005">Study conducted at the Department of Plastic Surgery, Yodogawa Christian Hospital, Kunijima, Osaka, Japan.</p>" ] ] "multimedia" => array:5 [ 0 => array:8 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 1790 "Ancho" => 2508 "Tamanyo" => 935201 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0005" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">(A) Clinical findings of primary EMPD. A rash and elevated lesions are found in the right scrotum. (B) Primary EMPD: Tumors that grow individually or alveolarly are found in the basal layer of the epidermis. There is a part where infiltration into the dermis layer is observed. Tumor cells have pale-colored vesicles, and the nuclei are irregularly shaped and unevenly distributed. (Hematoxylin & eosin, ×200). (C) Positive CK7 immunostaining (immunohistochemical staining for CK7 × 200). (D) Positive CAM2.5 immunostaining (Immunohistochemical staining for CAM2.5, ×200).</p>" ] ] 1 => array:8 [ "identificador" => "fig0010" "etiqueta" => "Figure 2" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr2.jpeg" "Alto" => 891 "Ancho" => 2508 "Tamanyo" => 519953 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0010" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Clinical findings. A subcutaneous mass in the right inguinal area is observed. (A) Atypical cells with a pale cytoplasm proliferated rapidly, and the findings are similar to those of previous invasive Paget’s disease (Hematoxylin & eosin, ×400).</p>" ] ] 2 => array:8 [ "identificador" => "fig0015" "etiqueta" => "Figure 3" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr3.jpeg" "Alto" => 1944 "Ancho" => 2508 "Tamanyo" => 1214797 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0015" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">(A) Clinical findings: A painful subcutaneous tumor is observed in the right forearm. (B) Small round atypical cells are diffusely proliferating, showing a bottom-heavy appearance (Hematoxylin & eosin, ×200). (C) Positive CD20 immunostaining (Immunohistochemical staining for MYC × 400). (D) Positive CD79a immunostaining (immunohistochemical staining for BCL-2, ×400).</p>" ] ] 3 => array:8 [ "identificador" => "fig0020" "etiqueta" => "Figure 4" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr4.jpeg" "Alto" => 1581 "Ancho" => 2508 "Tamanyo" => 1113327 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0020" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">(A) Ki-67 index: 99%. (B) Starry sky (macrophages phagocytosed spallation is found in the proliferation of atypical lymphocytes). (A and B) showed high grade lymphoma. (C) Positive MYC immunostaining (immunohistochemical staining for MYC × 40). (D) Positive BCL-2 immunostaining (immunohistochemical staining for BCL-2, ×40). (C and D) showed findings of double expressor lymphoma.</p>" ] ] 4 => array:8 [ "identificador" => "fig0025" "etiqueta" => "Figure 5" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr5.jpeg" "Alto" => 1060 "Ancho" => 3341 "Tamanyo" => 262067 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0025" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">Computed tomography findings. (A) Soft tissue tumor in the left maxillary sinus (yellow arrow). (B) Osteolytic changes in the skull (white arrows). 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