Regulation of Baicalin on Growth of Extranodal NK/T Cell Lymphoma Cells through FOXO3/CCL22 Signaling Pathway / 中国实验血液学杂志

OBJECTIVE@#To investigate the effect of baicalin on the growth of extranodal NK/T cell lymphoma (ENKTCL) cells and its related mechanism.@*METHODS@#Normal NK cells and human ENKTCL cells lines SNK-6 and YTS were cultured, then SNK-6 and YTS cells were treated with 5, 10, 20 μmol/L baicalin and set control. Cell proliferation and apoptosis was detected by Edu method and FCM method, respectively, and expressions of BCL-2, Bax, FOXO3 and CCL22 proteins were detected by Western blot. Interference plasmids were designed and synthesized. FOXO3 siRNA interference plasmids and CCL22 pcDNA overexpression plasmids were transfected with PEI transfection reagent. Furthermore, animal models were established for validation.@*RESULTS@#In control group and 5, 10, 20 μmol/L baicalin group, the proliferation rate of SNK-6 cells was (56.17±2.96)%, (51.92±4.63)%, (36.42±1.58)%, and (14.60±2.81)%, respectively, while that of YTS cells was (58.85±2.98)%, (51.38±1.32)%, (34.75±1.09)%, and (15.45±1.10)%, respectively. In control group and 5, 10, 20 μmol/L baicalin group, the apoptosis rate of SNK-6 cells was (5.93±0.74)%, (11.78±0.34)%, (28.46±0.44)%, and (32.40±0.37)%, respectively, while that of YTS cells was (7.93±0.69)%, (16.29±1.35)%, (33.91±1.56)%, and (36.27±1.06)%, respectively. Compared with control group, the expression of BCL-2 protein both in SNK-6 and YTS cells decreased significantly (P<0.001), and the expression of Bax protein increased in SNK-6 cells only when the concentration of baicalin was 20 μmol/L (P<0.001), while that in YTS cells increased in all three concentrations(5, 10, 20 μmol/L) of baicalin (P<0.001). The expression of FOXO3 protein decreased while CCL22 protein increased in ENKTCL cell lines compared with human NK cells (P<0.001), but the expression of FOXO3 protein increased (P<0.01) and CCL22 protein decreased after baicalin treatment (P<0.001). Animal experiments showed that baicalin treatment could inhibit tumor growth. The expression of CCL22 protein in ENKTCL tissue of nude mice treated with baicalin decreased compared with control group (P<0.01), while the FOXO3 protein increased (P<0.05). In addition, FOXO3 silencing resulted in the decrease of FOXO3 protein expression and increase of CCL22 protein expression (P<0.01, P<0.001).@*CONCLUSION@#Baicalin can inhibit proliferation and promote apoptosis of ENKTCL cell lines SNK-6 and YTS, up-regulate the expression of Bax protein, down-regulate the expression of BCL-2 protein, and down-regulate the expression of CCL22 protein mediated by FOXO3. Animal experiment shown that the baicalin can inhibit tumor growth. Baicalin can inhibit the growth and induce apoptosis of ENKTCL cells through FOXO3/CCL22 signaling pathway.

Influence of Pre-treatment Lymphocyte/Monocyte Ratio and Neutrophil/Lymphocyte Ratio on the Prognosis of Patients with Extranodal NK/T-Cell Lymphoma / 中国实验血液学杂志

OBJECTIVE@#To explore the influence of lymphocyte-to-monocyte ratio (LMR) and neutrophil-to-lymphocyte ratio (NLR) on the prognosis of patients with extranodal NK/T cell lymphoma (ENKTL).@*METHODS@#The clinical data of 203 patients with ENKTL admitted to the First Affiliated Hospital of Zhengzhou University from January 2011 to January 2020 were retrospectively analyzed. The ROC curve determined the limit values of LMR and NLR; Categorical variables were compared using a chi-square test, expressed as frequency and percentage (n,%). Continuous variables were expressed as medians and extremes and compared with the Mann-Whitney U test; Progression-free survival (PFS) and overall survival (OS) of different grouped LMR and NLR patients were analyzed using Kaplan-Meier curves and compared with log-rank tests. The COX proportional risk regression model was used to perform one-factor and multi-factor analysis of PFS and OS.@*RESULTS@#The optimal critical values of LMR and NLR were determined by the ROC curve, which were 2.60 and 3.40, respectively. LMR≤2.60 was more likely to occur in patients with bone marrow invasion (P=0.029) and higher LDH (P=0.036), while NLR≥3.40 was more likely to occur in patients with higher ECOG scores (P=0.002), higher LDH (P=0.008), higher blood glucose (P=0.024), and lower PLT (P=0.010). Kaplan-Meier survival analysis showed that PFS and OS of patients in the high LMR group were significantly better than the low LMR group, while PFS and OS in the low NLR group were significantly better than the high NLR group. The results of multivariate COX analysis showed that EBV-DNA positive (P=0.047), LMR≤2.60 (P=0.014), NLR≥3.40 (P=0.023) were independent risk factors affecting PFS in patients with ENKTL. LMR≤2.60 (P<0.001), NLR≥3.40 (P=0.048), and high β2-MG (P=0.013) were independent risk factors affecting OS in patients with ENKTL.@*CONCLUSION@#Low LMR and high NLR before treatment are associated with poor prognosis in patients with ENKTL, which also can be used as an easily testable, inexpensive, and practical prognostic indicator in the clinic.

Clinical Characteristics and Prognostic Analysis of Extranodal NK/T-Cell Lymphoma Patients Treated with Pegaspargase Based Chemotherapy / 中国实验血液学杂志

OBJECTIVE@#To investigate the clinical characteristics of patients with extranodal NK/T-cell lymphoma (ENKL), and to analyze the factors that affecting the survival and prognostic of patients treated with pegaspargase based chemotherapy.@*METHODS@#The clinical data of 61 ENKL patients treated in Peking Union Medical College Hospital from January 2015 to June 2019 were enrolled and retrospectively analyzed. The clinical characteristics, survival rate and influencing factors of prognostic in patients were investigated.@*RESULTS@#The male and female ratio in the whole group was 2.8∶1. The median age was 46 years old (range, 17-67 years old). 30 patients were in stage I/II, while 31 patients were in stage III/IV. The ratio of nasal and non-nasal type was 4.1∶1. The common sites of extranodal involvement were skin and subcutaneous tissue (26.2%), liver (14.8%), lung (13.1%) and gastrointestinal tract (13.1%). 9.8% of patients showed central nervous system involvement and 11.5% showed bone marrow involvement. The median follow-up time was 22 months (range, 1-53 months). The 2-year PFS and OS rates of patients in the whole group were 51.6% and 53.2%, respectively. The 2-year OS rate of patients at stage I/II was 87.5%, while that of patients at stage III/IV was only 21.2%, the difference showed statistically significant (P60 years old and Ann Arbor stage III-IV were the independent adverse factors that affecting the prognosis of PFS and OS (HR=3.681, 95% CI 1.322-10.250; HR=4.611, 95% CI 1.118-19.009).@*CONCLUSION@#The survival of ENKL patients has been significantly improved by pegaspargase based chemotherapy. Patients with stage I/II disease have achieved a relatively good 2-year OS rate of 87.5%, but the prognosis of stage III/IV and non-nasal type patients are still poor. Age>60 years old and Ann Arbor stage III/IV are independent adverse prognostic factors for ENKL patients.

Extranodal NK/T-cell lymphoma, nasal type with extensive cardiopulmonary involvement

Extranodal NK/T-cell lymphoma, nasal type (ENKTL-NT) is a rare type of Non-Hodgkin's lymphoma, which usually presents with extranodal involvement and affects the nasal/upper aerodigestive tract in the classical presentation. Herein, we report the case of a 31-year-old, previously healthy, male patient diagnosed with ENKTL-NT with the involvement of the lung parenchyma and heart. Unfortunately, due to the rapid disease progression, the diagnosis was performed only at the autopsy. The authors highlight the rare clinical presentation of this type of lymphoma, as well as the challenging anatomopathological diagnosis in necrotic samples.

Linfomas cutáneos: serie de casos en México / A case series of cutaneous lymphomas in Mexico

Resumen Introducción: Los linfomas cutáneos primarios son un grupo heterogéneo de neoplasias de células T y B que se presentan en la piel, sin ninguna evidencia de enfermedad extracutánea en el momento del diagnóstico, y muestran diferencias considerables en histologia, fenotipo y pronóstico. Se consideran neoplasias poco frecuentes. Casos clínicos: Se presentan cinco casos de linfomas cutáneos diagnosticados en el Hospital Infantil de México Federico Gómez durante el periodo de 2010 a 2018. Las presentaciones clínicas más frecuentes en estos pacientes fueron dermatitis, costras hemáticas y úlceras necróticas. El inmunofenotipo más común fue el linfoma cutáneo no Hodgkin T/NK extranodal nasal primario. El esquema de tratamiento que se utilizó en la mayoría de los pacientes fue SMILE. El promedio de tiempo al diagnóstico fue de 7 meses. Conclusiones: El pronóstico depende del estadio de la enfermedad al diagnóstico, grado de afectación de la piel y presencia o ausencia de enfermedad extracutánea. Los linfomas cutáneos primarios son neoplasias poco frecuentes. Debido al diagnóstico tardío, el estadio de la enfermedad suele ser avanzado, por lo que, generalmente, el comportamiento es agresivo.

Abstract Background: Primary cutaneous lymphomas are a rare heterogeneous group of T and B cell skin neoplasms without any evidence of extracutaneous disease at the time of diagnosis, which show considerable differences in histology, phenotype and prognosis. Case reports: Five cases of cutaneous lymphomas treated at the Hospital Infantil de México Federico Gómez from 2010 to 2018 are described. The most frequent clinical presentations in these patients were dermatitis, blood scabs, and necrotic ulcers. The most common immunophenotype was non-Hodgkin T/NK primary nasal extranodal cutaneous lymphomas. The treatment scheme used in most patients was SMILE. The average time to diagnosis was 7 months. Conclusions: The prognosis depends on the stage of the disease at diagnosis, the degree of skin involvement, and the presence of extracutaneous disease. As primary cutaneous lymphomas are infrequent neoplasms, the stage of the disease is usually advanced and generally shows an aggressive behavior due to a late diagnosis.

Linfoma Extranodal de Células T/NK en Cavidad Oral. Reporte de un Caso en Chile / Extranodal Lymphoma of T / NK Cells in Oral Cavity. Case Report in Chile

RESUMEN: El linfoma extranodal de células T/NK es una neoplasia maligna agresiva que se caracteriza por una destrucción de estructuras de la línea media de la cara como paladar y fosa nasal. Presentamos el caso de un paciente de sexo masculino, 48 años de edad, consumidor de cocaína, que consulta en la Facultad de Odontología de la Universidad de Chile en Septiembre del 2015 por síntomas de disfagia, rinorrea y que presenta al examen clínico un tumor ulcerado que compromete paladar duro y blando, de un mes de evolución. Se confirma diagnóstico de linfoma de células T/NK con una batería de pruebas inmunohistoquímicas. Esta patología, aunque infrecuente, siempre debe ser considerada dentro los diagnósticos diferenciales en tumores ulcerados en esta localización.

ABSTRACT: Extranodal T / NK cell lymphoma is an aggressive malignant neoplasm characterized by destruction of midline structures of the face such as the palate and nasal fossa. We present the case of a male patient, 48 years old, cocaine user, who consults at the Faculty of Dentistry of the Universidad de Chile in September of 2015 due to symptoms of dysphagia, rhinorrhea and presenting to the clinical examination an ulcerated tumor which compromises hard and soft palate, a month of evolution. Diagnosis of T / NK cell lymphoma is confirmed with a battery of immunohistochemical tests. This pathology, although infrequent, should always be considered within the differential diagnoses in ulcerated tumors of this location.

Linfoma nasal de células T/NK (granuloma letal de la línea media), una neoplasia agresiva: reporte de un caso / Nasal T/NK-cell lymphoma (lethal midline granuloma), an aggressive neoplasia: report of a case

RESUMEN El linfoma nasal de células T/NK es una neoplasia agresiva, infrecuente, con predilección por el sexo masculino. Representa el 1,5% del total de linfomas no Hodgkin, el grupo etáreo más afectado es entre 40 a 80 años. Su etiología es desconocida, pero se ha asociado con el virus de Epstein Barr. Se presenta el caso de una paciente mujer de 40 años, con dolor e induración de fosa nasal derecha asociado a secreción fétida, seropurulenta de 3 meses de evolución. Estudio histopatológico, reporta linfoma nasal de células T/NK. La paciente recibe quimioterapia, con mejoría clínica sustancial. El linfoma T/NK es una neoplasia con sintomatologia inespecífica, predominio que afecta nasofaringe, amígdalas y base de la lengua. Entre las manifestaciones encontramos dolor de garganta, obstrucción nasal, rinorrea, epistaxis y cefalea. El diagnóstico se sospecha con imágenes, pero es necesaria la confirmación histológica con marcadores de inmunohistoquímica CD45Ro, CD43, CD3, CD2, CD45Ro entre otros. Muchos casos suelen detectarse en fase tardía, cuando ya son evidentes los signos radiológicos de destrucción ósea. El diagnóstico diferencial incluye lesiones infecciosas o inflamatorias, la bola fúngica fue el diagnóstico inicial realizado en esta paciente. El tratamiento suele realizarse con radioterapia y quimioterapia.

ABSTRACT Nasal T-cell / NK lymphoma is an uncommon aggressive neoplasm with male predilection. It represents 1.5% of the total number of non-Hodgkin's lymphomas, the most affected age group is 40-80 years. Its etiology is unknown but has been associated with the Epstein Barr virus. We present the case of a female patient of 40 years, with pain and induration of the right nostril associated with fetid secretion, seropurulent of 3 months of evolution. Histopathological study, reports T-cell / NK nasal lymphoma. The patient receives chemotherapy, with substantial clinical improvement. T / NK lymphoma is a neoplasm with predominant non-specific symptomatology, affecting the nasopharynx, tonsils and base of the tongue. Among the manifestations we find sore throat, nasal obstruction, rhinorrhea, epistaxis and headache. Diagnosis is suspected with imaging, but histological confirmation with immunohistochemical markers CD45Ro, CD43, CD3, CD2, CD45Ro, among others is required. Many cases are usually detected in the late phase, when radiological signs of bone destruction are already visible. The differential diagnosis includes infectious or inflammatory lesions, the fungal ball was the initial diagnosis made in this patient. Treatment is usually done with radiotherapy and chemotherapy.

Nasal-type extranodal T-cell/NK lymphoma in association with hemophagocytic syndrome

Abstract: Extranodal NK/T-cell lymphoma nasal type is a rare disease that mainly affects the nasal cavity and paranasal sinuses of males in the fifth decade of life. It has aggressive and locally destructive behaviour, and can be complicated by the hemophagocytic syndrome, conferring high lethality to the disease. This article describes a case of NK/T-cell lymphoma nasal type in a previously healthy patient, exemplifying its rapid and fulminant course.

Linfoma T/NK extraganglionar tipo nasal: caso clínico / Extranodal T/NK-Cell lymphoma nasal type: clinical case

El linfoma T/NK extraganglionar tipo nasal es un linfoma extraganglionar, habitualmente expresa el fenotipo NK y VEB positivo. Cursa ocasionando necrosis y angioinvasión afectando de manera preferente estructuras mediofaciales. Característicamente es muy agresivo. Presentamos un caso con una sobrevida de siete meses a partir de los primeros síntomas y realizamos revisión de la literatura.

Extranodal NK/T-cell lymphoma nasal type, is an extranodal lymphoma, usually with an NK-cell phenotype and EBV possitive. It causes necrosis and angioinvasion, and it is most commonly presenting in the midfacial area. Characteristically it is very aggressive. A case with survival of seven months from the first symptoms is reported and a review of the literature is made.

Multifocal primary cutaneous extranodal NK/T lymphoma nasal type

Abstract Nasal type extranodal NK/T-cell lymphoma is a distinct entity according to the World Health Organization classification. Although 60% to 90% of patients with this disease present with a destructive mass in the midline facial tissues, it may also primarily or secondarily involve extranasal sites, like the skin. We report the case of a 77-year-old patient that came to our department with erythematous plaques of the right leg and eczematous lesions of the trunk. These lesions were biopsied and the patient was diagnosed with extranodal NK/T-cell lymphoma, nasal type. He was treated with multi-agent systemic chemotherapy but died 5 months after diagnosis. This case highlights the rarity and variability of cutaneous features of this disease and its aggressive course and poor prognosis.

Clinical and otorhinolaryngological aspects of extranodal NK/T cell lymphoma, nasal type / Aspectos clínicos e otorrinolaringológicos do linfoma extranodal de células NK/T tipo nasal,

INTRODUCTION: Extranodal NK/T-Cell lymphoma, nasal type (NKTLN) is a disease that mainly affects the nasal cavity and the paranasal sinuses. Early nasal symptoms are nonspecific, simulating sinus infection. With disease progression, necrosis of the nasal mucosa increases, hindering histological diagnosis. Thus, multiple biopsies may be necessary until definitive diagnosis. Most studies on NKTLN address the hematological and immunological aspects of the disease. OBJECTIVES: To present data from a Brazilian quaternary hospital, with emphasis on the clinical aspects of the disease, and to correlate the findings with the most recent literature data. METHODS: Case study of seven patient files. RESULTS: Patients were evaluated on their medical history, number of biopsies necessary, association with Epstein-Barr virus, treatment, and outcome. All patients had nonspecific nasal complaints and underwent at least three cycles of antibiotic therapy. The earlier a biopsy was performed, the fewer biopsies were required to diagnose the disease and start treatment. However, this fact did not translate into better prognosis. CONCLUSION: The otolaryngologist plays a fundamental role in the prognosis of NKTLN and can shorten time between symptom onset and treatment of the patient. .

INTRODUÇÃO: O linfoma extranodal de células NK/T tipo nasal (LNKTN) é uma doença que acomete preferencialmente a cavidade nasal e os seios paranasais. Os sintomas nasais iniciais são inespecíficos, mimetizando um quadro de infecção nasossinusal. Com a progressão da doença, aumenta a necrose da mucosa nasossinusal, dificultando o diagnóstico histológico e podendo ser necessárias múltiplas biópsias até o diagnóstico definitivo. A maioria dos estudos sobre o LNKTN aborda aspectos imunológicos e hematológicos da doença. OBJETIVO: Apresentar a casuística de um hospital quaternário brasileiro, destacando os aspectos clínicos dos pacientes e correlacionando aos achados mais recentes da literatura. MÉTODO: Estudo de casos de sete pacientes. RESULTADOS: Pacientes foram avaliados quanto a aspectos de sua história clínica, número de biópsias necessárias, associação ao EBV, tratamento e evolução. Todos iniciaram o quadro com queixas inespecíficas nasais e foram submetidos a pelo menos três ciclos de antibióticos. Quanto mais precocemente a biópsia foi realizada, menos biópsias foram necessárias para se obter o diagnóstico e iniciar o tratamento. Entretanto, esta situação não refletiu num melhor prognóstico dos pacientes. CONCLUSÃO: O otorrinolaringologista tem papel fundamental no prognóstico do LNKTN, podendo encurtar o tempo entre o início dos sintomas e o tratamento do paciente. .

Breast Metastases from Extramammary Malignancies: Typical and Atypical Ultrasound Features

Breast metastases from extramammary malignancies are uncommon. The most common sources are lymphomas/leukemias and melanomas. Some of the less common sources include carcinomas of the lung, ovary, and stomach, and infrequently, carcinoid tumors, hypernephromas, carcinomas of the liver, tonsil, pleura, pancreas, cervix, perineum, endometrium and bladder. Breast metastases from extramammary malignancies have both hematogenous and lymphatic routes. According to their routes, there are common radiological features of metastatic diseases of the breast, but the features are not specific for metastases. Typical ultrasound (US) features of hematogenous metastases include single or multiple, round to oval shaped, well-circumscribed hypoechoic masses without spiculations, calcifications, or architectural distortion; these masses are commonly located superficially in subcutaneous tissue or immediately adjacent to the breast parenchyma that is relatively rich in blood supply. Typical US features of lymphatic breast metastases include diffusely and heterogeneously increased echogenicities in subcutaneous fat and glandular tissue and a thick trabecular pattern with secondary skin thickening, lymphedema, and lymph node enlargement. However, lesions show variable US features in some cases, and differentiation of these lesions from primary breast cancer or from benign lesions is difficult. In this review, we demonstrate various US appearances of breast metastases from extramammary malignancies as typical and atypical features, based on the results of US and other imaging studies performed at our institution. Awareness of the typical and atypical imaging features of these lesions may be helpful to diagnose metastatic lesions of the breast.

Clinical characteristics, pathological distribution, and prognostic factors in non-Hodgkin lymphoma of Waldeyer's ring: nationwide Korean study

BACKGROUND/AIMS: In Asia, the incidence of non-Hodgkin lymphoma (NHL) has increased in recent decades. Waldeyer's ring (WR) is the most common site of NHL involving the head and neck. In this study, the pathological distribution of WR-NHL and its clinical features were analyzed retrospectively. METHODS: From January 2000 through December 2010, we analyzed the medical records of 328 patients from nine Korean institutions who were diagnosed with WR-NHL. RESULTS: The study group comprised 197 male and 131 female patients with a median age of 58 years (range, 14 to 89). The rate of localized disease (stage I/II) was 64.9%, and that of low-risk disease (low/low-intermediate, as defined by the International Prognostic Index) was 76.8%. Diffuse large B-cell lymphoma (DLBCL; 240 patients, 73.2%) was the most common pathologic subtype, followed by peripheral T-cell lymphoma (14 patients, 4.3%) and nasal NK/T-cell lymphoma (14 patients, 4.3%). WR-NHL occurred most frequently in the tonsils (199 patients, 60.6%). Extranodal involvement was greater with the T-cell subtype (20 patients, 42.5%) compared with the B-cell subtype (69 patients, 24.5%). Multivariate analyses showed that age > or = 62 years, T-cell subtype, and failure to achieve complete remission were significant risk factors for overall survival. CONCLUSIONS: DLBCL was found to have a higher incidence in Korea than those incidences reported by other WR-NHL studies. T-cell lymphoma occurred more frequently than did follicular lymphoma. T-cell subtype, age > or = 62 years, and complete remission failure after first-line treatment were significant poor prognostic factors for overall survival according to the multivariate analysis.

Ocular masquerade syndrome associated with extranodal nasal natural killer/T-cell lymphoma: case report / Síndrome ocular mascarada associada ao linfoma extranodal nasal natural killer/células T: relato de caso

A 33-year-old woman complained of unilateral eyelid edema and blurred vision. Initial ophthalmic examination disclosed anterior chamber reaction with keratic precipitates on the cornea, without posterior abnormalities. Anterior uveitis was treated. Despite that, patient showed rapidly progressive unilateral vision loss with optic nerve swelling. Systemic workup was inconclusive, as well as cranial magnetic resonance imaging and cerebrospinal fluid examination. Based on the hypothesis of optic neuritis, intravenous methylprednisolone pulse was performed with no success. During the following days, the patient presented pericardial effusion and cardiac tamponade, progressing to death. Necropsy was performed and diagnosis of extranodal natural killers/T-cell lymphoma, nasal type with ocular involvement was confirmed by immunohistochemistry.

Paciente feminina de 33 anos apresentando edema palpebral unilateral com baixa acuidade visual. Ao exame oftalmológico inicial apresentava reação de câmara anterior com precipitados ceráticos corneano, sem alterações no fundo de olho. Foi instituído tratamento para uveíte anterior e solicitado exames sistêmicos para investigação. Após alguns dias, paciente apresentou piora da acuidade visual, com edema de disco óptico unilateral. Sendo então solicitada ressonância nuclear magnética de crânio. Ambos exames de imagem e investigação sistêmica foram inconclusivos. Em vista da piora progressiva da acuidade visual e sob hipótese diagnóstica de neurite óptica, foi iniciado pulso intravenoso de metilprednisolona por 3 dias sem sucesso. A paciente apresentou dos dias seguintes, derrame pericárdico e tamponamento cardíaco, evoluindo para óbito. A necrópsia confirmou o diagnóstico de linfoma extranodal de células T e natural killers do tipo nasal com envolvimento ocular, através de imunoistoquímica.

Virus de Epstein-Barr y piel / Epstein-Barr virus and skin

La infección por el virus de Epstein-Barr puede afectar de manera muy variada al ser humano en sus diferentes etapas de la vida. Algunas veces las manifestaciones son asintomáticas o con síntomas poco específicos y otras puede presentarse como una enfermedad de severidad y duración variable, que puede desarrollar un proceso maligno. Hasta el momento se ha estudiado muy poco sobre la relación del virus de Epstein-Barr y piel, por lo que se trata de hacer una revisión de esta enfermedad y sus diferentes expresiones en la piel.

Epstein-Barr virus infection can occur in different manners, affecting humans throughthe different stages of life. Sometimes, manifestations are asymptomatic or non specific;conversely it can occur as a disease of variable severity and duration, and occasionallyeventuate into malignancy. So far little has been studied on the relationship betweenEpstein-Barr virus and skin; therefore we present this review of the disease and its various expressions upon the skin.

Aggressive nasal-type natural killer/-T-cell lymphoma associated with Epstein barr virus presenting as testicular tumor

Testicular lymphoma is a lethal disease with a median survival of approximately 12 to 24 months. Nasal-type natural killer/T-cell lymphoma of the testis is exceptional whether as a primary or secondary tumor. The authors report on the comprehensive histopathologic, immunohistochemical and molecular analysis of a case of primary testicular nasal type NK/T cell lymphoma and review the features of previously reported cases. We report a case of primary nasal-type natural killer/T-cell lymphoma of testis in a 28-year-old male. The histopathological examination of the surgical specimen, showed a large lymphoma cells with angioinvasion expressing CD 3 [cytoplasmic], CD2, CD8, CD43, CD45, CD45Ro, CD56, T-cell intracellular antigen-1, perforine, Mib1 and granxyme. In situ hybridation for Epstein-Barr-virus-encoded mENA was positive. Polymerase chain reaction study of formalin-fixed tissue showed lack of T-cell receptor gene rearrangements. The initial stage was I [EA] of Ann Arbor. This lymphoma was refractory to chemotherapy. The patient developed lymph node metastases in the out iliac and in the subclavicular region two months later. He died of disease after eight months. This study confirms that testicular NK/T-cell lymphoma deserves to be distinguished from the other testicular lymphomas. In fact, this lymphoma tends to occur at young age, to disseminate early, to have an aggressive course, and is strongly associated with EBV