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1.
Article in Spanish | LILACS, CUMED | ID: biblio-1289427

ABSTRACT

Introducción: La leucemia linfoide crónica es un trastorno linfoproliferativo caracterizado por la acumulación de linfocitos pequeños de aspecto maduro en sangre periférica, médula ósea y tejidos linfoides con un período de vida prolongado. Presenta una gran variabilidad clínica y genética. Objetivo: Describir los aspectos citogenéticos y moleculares de la leucemia linfoide crónica. Métodos: Se realizó revisión de la literatura en inglés y español, a través del sitio web PubMed y el motor de búsqueda Google académico, de artículos publicados en los últimos 5 años. Se hizo un análisis y resumen de la bibliografía revisada. Desarrollo: En la leucemia linfoide crónica están presentes alteraciones citogenéticas frecuentes como la deleción de los cromosomas 13q, 11q y 17p, así como la trisomía 12, que unido al conocimiento del estado mutacional del gen de la región variable de la cadena pesada de la inmunoglobulina, y otras mutaciones somáticas en diferentes genes, así como a variables clínicas y de laboratorio permiten la estratificación pronóstica de los pacientes. Conclusiones: El diagnóstico a través de los estudios citogenéticos convencionales estimulados con mitógenos, la hibridación in situ por fluorescencia y la secuenciación génica permite una mayor comprensión de la biología de la enfermedad, así como tomar decisiones terapéuticas más personalizadas(AU)


Introduction: Chronic B lymphoid leukemia is a lymphoproliferative disorder characterized by the accumulation of small, mature-looking lymphocytes in peripheral blood, bone marrow and lymphoid tissues with a long life span. It has great clinical and genetic variability. Objective: To describe the cytogenetic and molecular aspects of the disease. Methods: A review of the literature in English and in Spanish was carried out, in the PubMed website and using the search engine of Google Scholar, for articles published in the last five years. We performed analysis and summary of the reviewed bibliography. Development: In chronic lymphoid leukemia, frequent cytogenetic alterations are present such as deletion of chromosomes 13q, 11q and 17p, as well as trisomy 12, which together with the knowledge of the mutational status of the gene for the variable region of the immunoglobulin heavy chain and other somatic mutations in different genes, as well as clinical and laboratory variables allows prognostic stratification of patients. Conclusions: Diagnosis through conventional mitogen-stimulated cytogenetic studies, fluorescence in situ hybridization and gene sequencing allow a better understanding of the biology of the disease, as well as making more personalized therapeutic decisions(AU)


Subject(s)
Biology , Genetic Therapy , Leukemia, Lymphoid/genetics , In Situ Hybridization , Cytogenetics , Lymphoproliferative Disorders , Mutation
2.
Article in Spanish | LILACS, COLNAL | ID: biblio-1253868

ABSTRACT

Introducción: a raíz del siguiente reporte de caso clínico se pretende repensar el diagnóstico diferencial de los tumores orbitales y revisar la literatura existente al respecto. Caso: paciente de 54 años, fumadora, acude a nuestro centro por una pérdida de agudeza visual progresiva de dos años de evolución en el ojo derecho, que se acompañaba de proptosis. Las pruebas de imagen basadas en resonancia magnética y tomografía por emisión de positrones ­ tomografía computarizada (PET-TC) realizadas describían una lesión intraconal derecha de morfología indefinida, que rodeaba el nervio óptico. El estudio inmunohistoquímico y molecular anatomopatológico confirmó la sospecha de síndrome linfoproliferativo extranodal de bajo grado. Discusión: el manejo endoscópico de estas lesiones puede resultar en una menor comorbilidad en comparación con el abordaje externo tradicional. El papel de la cirugía radica en la obtención de una muestra de la lesión que permita un correcto diagnóstico. Conclusiones: el abordaje multidisciplinar con oftalmólogos, hematólogos y expertos en radioterapia permite obtener buenos resultados quirúrgicos y clínicos en la inmensa mayoría de casos.


Introduction: as result of the following clinical case report, we intend to review the differential diagnosis of orbital tumors and review the existing literature in this regard. Case report: a 54-year-old smoking patient, consulted to our department due to a progressive visual impairment over the last two years in her right eye. She presented proptosis in her clinical examination. Imaging studies based on MRI and PET-CT described a right intraconal lesion with an undefined morphology surrounding the optic nerve. Orbital tumors differential diagnosis is delicate. Nevertheless, Non-Hodgkin lymphomas followed by metastasis are the two most common found in this location. The immunohistochemistry and molecular studies, confirmed the suspected diagnosis of extranodal low-grade lymphoproliferative syndrome. Discussion: endoscopic management of these lesions may result in a lower comorbidity compared to traditional external approaches. Role of surgery lays in obtainment of a quality sample which allows a proper diagnosis. Conclusions: multidisciplinary approach with ophthalmologists, hematologists and radiotherapy experts enhance good surgical and clinical results in the vast majority of cases.


Subject(s)
Humans , Female , Adult , Lymphoma, Non-Hodgkin/complications , Orbital Neoplasms/complications , Exophthalmos/etiology , Vision, Low/etiology , Lymphoproliferative Disorders/complications , Lymphoma, Non-Hodgkin/surgery , Lymphoma, Non-Hodgkin/diagnosis , Orbital Neoplasms/surgery , Orbital Neoplasms/diagnosis , Exophthalmos/surgery , Exophthalmos/diagnosis , Vision, Low/surgery , Vision, Low/diagnosis , Diagnosis, Differential , Lymphoproliferative Disorders/surgery , Lymphoproliferative Disorders/diagnosis
3.
Autops. Case Rep ; 10(2): e2020147, Apr.-June 2020. graf
Article in English | LILACS | ID: biblio-1131811

ABSTRACT

In adults, B-lymphocytes comprise approximately 10% of circulating lymphocytes. The majority of peripheral B cells are B2 cells ("Mature" B-cells), which function as part of the humoral adaptive immune system. B1 cells ("Innate-like" B cells) are another sub-class of B lymphocytes, considered as innate immune cells with a characteristic phenotype (CD20+, CD27+, CD43+, CD70-, CD11b+, sIgM++, sIgD+) which can be divided into two subtypes; B1a (CD5+): spontaneously produce broadly reactive natural IgM, and B1b (CD5-): can generate T-cell independent, long-lasting IgM. There is very limited data available, indicating a correlation between allogeneic bone marrow transplantation and an increase in B1a cells. Here we present a case of a 17-year-old female with homozygous sickle cell disease (HbSS disease) who underwent hematopoietic stem cell transplant (HSCT). Approximately seven months post-transplant, she was found to have 16% immature mononuclear cells on complete blood count (CBC)-differential report. A follow-up peripheral blood flow cytometry showed that these cells were polyclonal CD5+/CD20+ B-cells, and comprised 66% of lymphocytes. Further workup and follow up failed to reveal any lymphoproliferative disorders. It is important not to misdiagnose these cells as an atypical CD5+ lymphoproliferative disorder. The presence of B1a cells has not been widely reported in non-neoplastic post-stem cell transplanted patients. This case also adds to and expands our knowledge regarding the presence of increased circulating B1a cells after stem cell transplant in a patient with no history of hematological malignancy.


Subject(s)
Humans , Female , Adolescent , Stem Cell Transplantation/adverse effects , Blood Cell Count , Hematopoietic Stem Cells , B-Lymphocytes/cytology , B-Lymphocyte Subsets/pathology , Flow Cytometry , Anemia, Sickle Cell , Lymphoproliferative Disorders/diagnosis
4.
Rev. cuba. hematol. inmunol. hemoter ; 36(1): e1137, ene.-mar. 2020. graf
Article in Spanish | LILACS, CUMED | ID: biblio-1126539

ABSTRACT

Introducción: La citometría de flujo es una técnica de avanzada, objetiva y altamente sensible que permite el análisis y la cuantificación simultánea de múltiples parámetros celulares; es muy utilizada en el estudio de las hemopatías malignas. En los últimos años, ha demostrado ser de gran utilidad en la identificación y la caracterización inmunofenotípica de los síndromes linfoproliferativos crónicos. Estos constituyen un grupo heterogéneo de enfermedades caracterizadas por la expansión monoclonal de células linfoides de aspecto maduro. Objetivos: Analizar los aspectos generales de la aplicación de la técnica de citometría de flujo al estudio y clasificación inmunofenotípica de los síndromes linfoproliferativos crónicos. Métodos: Se realizó una investigación bibliográfica-documental acerca del tema. Se consultaron las bases de datos de SciELO y Pubmed. Análisis y síntesis de la información: Se describen los aspectos técnicos de la citometría de flujo, desde la obtención y procesamiento de las muestras hasta la generación del informe por el citómetro; así como la aplicación de la técnica a la caracterización inmunofenotípica de los síndromes linfoproliferativos crónicos. La citometría de flujo multiparamétrica se ha convertido en uno más de los métodos diagnósticos de este síndrome. Uno de los principales objetivos del estudio inmunofenotípico por citometría de flujo consiste en descartar si esa población de células B es clonal o no. Conclusiones: La citometría de flujo permite el análisis, la interpretación y la clasificación inmunofenotípica de los síndromes linfoproliferativos crónicos. Es una herramienta útil en las que se apoya el diagnóstico y el seguimiento de estos pacientes(AU)


Introduction: Flow cytometry is an advanced, objective and highly sensitive technique that allows simultaneous quantification and analysis of multiple cellular parameters. It is widely used in the study of malignant hemopathies. In recent years, it has proved very useful in the identification and immunophenotypic characterization of chronic lymphoproliferative syndromes. These conditions belong to a heterogeneous group of diseases characterized by monoclonal expansion of mature lymphoid cells. Objectives: To analyze the general aspects of flow cytometry application to the study and immunophenotypic classification of chronic lymphoproliferative syndromes. Methods: A bibliographic-documentary research about the topic was carried out. We consulted the SciELO and Pubmed databases. Information analysis and synthesis: The technical aspects of the flow cytometry are described, from obtaining and processing the samples to the cytometer's generating the report; as well as the technique's application to the immunophenotypic characterization of chronic lymphoproliferative syndromes. Multiparametric flow cytometry has become one of the diagnostic methods for this syndrome. One of the main objectives of the immunophenotypic study by flow cytometry is to rule out whether this population of B cells is clonal or not. Conclusions: Flow cytometry allows the analysis, interpretation and immunophenotypic classification of chronic lymphoproliferative syndromes. It is a useful tool that supports the diagnosis and monitoring of these patients(AU)


Subject(s)
Humans , Male , Female , Immunophenotyping/methods , Flow Cytometry/methods , Lymphoproliferative Disorders/diagnostic imaging
5.
Autops. Case Rep ; 10(4): e2020206, 2020. graf
Article in English | LILACS | ID: biblio-1131860

ABSTRACT

We present the first report of two rare yet remarkably similar autopsy cases of Kaposi sarcoma (KS) and intravascular human herpesvirus 8 (HHV8) positive lymphoproliferative disorder in renal transplant patients. It is well established that HHV8 infection causes Kaposi sarcoma (KS). More recently, it is recognized that HHV8 is also related to several lymphoproliferative conditions. These are poorly characterized and often difficult to diagnose. In both cases described herein, the diagnoses of multifocal hepatic KS and intravascular HHV8 positive (EBV negative) systemic diffuse large B-cell lymphoma, NOS were made at autopsy. Given the findings we describe in cases with fatal outcomes, we discuss the implications of HHV8 screening in solid allograft recipients.


Subject(s)
Humans , Male , Adult , Sarcoma, Kaposi , Herpesvirus 8, Human , Lymphoproliferative Disorders , Autopsy , Fatal Outcome , Transplant Recipients
6.
An. bras. dermatol ; 94(1): 99-101, Jan.-Feb. 2019. tab, graf
Article in English | LILACS | ID: biblio-983747

ABSTRACT

Abstract: Primary cutaneous CD4+ small/medium T-cell lymphoproliferative disorder is a rare disease, with an indolent evolution and benign course. The classic presentation is a solitary nodule on the face or trunk. The disorder's rarity and clinical and histopathological characteristics, can make the diagnosis difficult. We present the case of a 36-year-old Caucasian woman with a purplish erythematous nodule, hardened, shiny, asymptomatic, on the left nasal ala, which had grown progressively for 45 days. Histopathological examination and immunohistochemistry panel demonstrated alterations consistent with primary cutaneous CD4+ small/medium T-cell lymphoproliferative disorder. There was complete remission of the condition within 60 days of treatment with potent occlusive corticosteroids.


Subject(s)
Humans , Female , Adult , CD4-Positive T-Lymphocytes/pathology , Erythema/pathology , Lymphoproliferative Disorders/pathology , Skin Neoplasms/pathology , Immunohistochemistry , Lymphoma, T-Cell, Cutaneous/pathology
8.
Article in Chinese | WPRIM | ID: wpr-771875

ABSTRACT

OBJECTIVE@#To investigate the clinical characteristics and therapeutic responte of patients with B-CLPD mainly manifested as cytopenia, so as to deeply understand this disease.@*METHODS@#The clinical data of 13 B-CLPD patients with hematocytopenia as main manifestation, and the absolute count of lymphocytes<5×10/L, absence of hepatosplenic lymph-nodes and extramedullary invasion tin our department fron 2003 to 2018 were analyzed retrospectively. The clinical characteristics, therapeutic efficacy and adverse reactions of 3 patients were summarized.@*RESULTS@#The median age of patients was 59 (43-76) years old, the median of lymphocyte was 1.86 (0.69-4.8) ×10/L, the levels of LDH and β2-microglubulin were normal in most patients, the monolineage and multilencage hematopoietic failure of different degrees existed in most all patients. The lymphocyte ratio in patients was 18.5%-94.0%, CD20 was positive in all patients, and yet the CD5-positive and CD-negative existed in 7 and 6 cases respectively. There was no significant difference in ratio of lymphocyte invasion among different immunophemtype. The FISH detection showed that there were no high risk genetic types. 92.3% of patients received rituximab treatment, most of them received chemotherapy of rituximab combined with C0P/CHOP like regimen, only 2 patients received fludarabine for comparatively short course. The analysis indicated that 8 out of 13 patients showed a certain theropeutic efficacy, however the drug-related hematopoietic suppression occurred in both 2 patients treated with fludarabin.@*CONCLUSIONS@#The B-CLPD accompanied with hematocytopenia often displays bone marrow hypohematopoiesis of different degree and easily confuses with the congenital and acquired hemotopoietic faiture diseases. The rituximab treatment may be more appropreate for these patients, but for patients received chemotherapy containing fludarabin, the persistant hematopoietic failure must be especially watched out.


Subject(s)
Adult , Aged , Antigens, CD20 , Antineoplastic Combined Chemotherapy Protocols , B-Lymphocytes , Cyclophosphamide , Humans , Lymphoproliferative Disorders , Middle Aged , Retrospective Studies , Rituximab
10.
Article in English | WPRIM | ID: wpr-763129

ABSTRACT

PURPOSE: Chronic lymphocytic leukemia (CLL) is one of the most frequent type of B-cell chronic lymphoproliferative disorders and chronic inflammation takes part in the development of CLL. However, there has been no valid immune biomarker to predict the prognosis of untreated CLL patients. MATERIALS AND METHODS: In this retrospective study, we analyzed the clinical correlations and prognostic value of albumin-to-fibrinogen ratio (AFR) detected at diagnosis in 191 CLL patients. RESULTS: The cut-off value of AFR was 9.7 calculated by X-tile. Patients who were more than 65 years old were often accompanied by low level of AFR (p < 0.001). Survival analysis showed that patients with low level of AFR had shorter overall survival (OS) than patients with high level of AFR (p < 0.001). Multivariate analysis illustrated that AFR had a negative impact on OS (p=0.003) and was independent of parameters involved in CLL international prognostic index and other prognostic markers such as CD38 and ZAP-70. CONCLUSION: These data provide a comprehensive view of AFR and shows that AFR at diagnosis is an adverse prognostic factor in untreated CLL patients.


Subject(s)
B-Lymphocytes , Diagnosis , Fibrinogen , Humans , Inflammation , Leukemia, Lymphocytic, Chronic, B-Cell , Lymphoproliferative Disorders , Multivariate Analysis , Prognosis , Retrospective Studies , Serum Albumin
11.
Article in English | WPRIM | ID: wpr-762761

ABSTRACT

Primary cutaneous anaplastic large cell lymphoma (C-ALCL) is a rare subtype of primary cutaneous lymphoma with a favorable prognosis. Primary cutaneous CD30+ lymphoproliferative disorders, which include C-ALCL and lymphomatoid papulosis, are the second most common group of cutaneous T-cell lymphomas. C-ALCL is comprised of large cells with anaplastic, pleomorphic, or immunoblastic cytomorphology, and indeed, more than 75% of the tumor cells express the CD30 antigen. C-ALCL clinically presents with solitary or localized reddish-brown nodules or tumors, and sometimes indurated papules, and they may be with ulceration covering with dark eschar. Multifocal lesions are seen in 20% of the patients. Extracutaneous dissemination, which mainly involves the regional lymph nodes, occurs in 10% of patients. A 69-year-old man noticed a mild elevated cutaneous lesion containing central ulceration covering with brownish black necrotic tissue on the right lower lip, and the lesion was surgically removed. After the first operation, another skin lesion was developed and the histological examination confirmed the diagnosis, C-ALCL. Eight specimens were excised during the 7-month follow-up period. The patient started the treatment with low-dose oral methotrexate (15 mg/wk) and there was no recurrence for 11 months.


Subject(s)
Aged , Ki-1 Antigen , Diagnosis , Follow-Up Studies , Humans , Lip , Lymph Nodes , Lymphoma , Lymphoma, Primary Cutaneous Anaplastic Large Cell , Lymphoma, T-Cell, Cutaneous , Lymphomatoid Papulosis , Lymphoproliferative Disorders , Methotrexate , Prognosis , Recurrence , Skin , Ulcer
12.
Article in English | WPRIM | ID: wpr-761494

ABSTRACT

This is a case of a 56-year-old man with Castleman disease (CD) who improved after kidney transplantation (KTP). CD is an uncommon lymphoproliferative disorder that was found incidentally on biopsy during dialysis in the current patient and was followed up without further treatment. However, the lesion showed improvement after KTP. Therefore, active KTP can be considered even if CD is one of the lymphoproliferative disorders that can occur as a complication after KTP.


Subject(s)
Biopsy , Dialysis , Castleman Disease , Humans , Kidney Transplantation , Kidney , Lymphoproliferative Disorders , Middle Aged , Renal Dialysis
13.
Article in English | WPRIM | ID: wpr-766180

ABSTRACT

Follicular bronchiolitis (FB) is an uncommon pulmonary lymphoproliferative disorder that is characterized by the presence of peribronchiolar hyperplastic lymphoid follicles with reactive germinal centers. FB could be associated with systemic illnesses including immunodeficiency, infection, and autoimmune diseases. In Korea, a single case of FB with rheumatoid arthritis was recently described but there has been no report on FB associated with other rheumatic diseases. Herein, we describe the first case of FB presenting nodular ground-glass opacities (GGO), which mimicked lung cancer, in patients with primary Sjögren's syndrome (SS). The differential diagnosis of nodular GGO lesions should include FB although it is a rare manifestation in SS patients.


Subject(s)
Arthritis, Rheumatoid , Autoimmune Diseases , Bronchiolitis , Diagnosis, Differential , Germinal Center , Humans , Korea , Lung Diseases , Lung Neoplasms , Lung , Lymphoproliferative Disorders , Rheumatic Diseases
14.
Rev. méd. hondur ; 86(3/4): 134-137, jul.- dic. 2018.
Article in Spanish | LILACS | ID: biblio-1022599

ABSTRACT

Antecedentes. El síndrome hemofagocítico (SH) es un síndrome de activación inmune patológica, infrecuente, subdiag-nosticada, su importancia radica en su gravedad, pues son cuadros muy agresivos que evolucionan en poco tiempo de forma fulmi-nante, con un fallo multiorgánico letal, antes de establecer un diagnóstico. Se encuentran en todos los grupos de edad, pero en gen-eral es más frecuente en los niños. Esta revisión se realizó con el propósito de conocer más a profundidad esta patología, identificar el padecimiento oportunamente y así mismo administrar el tratamiento temprano y adecuado para mejorar la supervivencia del paciente. Métodos: La búsqueda exhaustiva de artículos con menos de 10 años de publicación en las bases de datos PubMed, Scielo, Elsevier, Scribd, Medigraphic. Desarrollo y Conclusiones: Aunque el SH es de difícil identificación por los síntomas tan inespecíficos, si se diagnostica y trata en el momento oportuno, dada su elevada morbimortalidad se lograra salvar muchas vidas...(AU)


Subject(s)
Humans , Phagocytosis , Lymphohistiocytosis, Hemophagocytic/diagnosis , Bone Marrow/injuries , Lymphoproliferative Disorders
15.
Biomédica (Bogotá) ; 38(4): 456-462, oct.-dic. 2018. tab, graf
Article in Spanish | LILACS | ID: biblio-983954

ABSTRACT

El síndrome hemofagocítico es una condición clínica e histológica grave, secundaria a diferentes procesos. La glomerulonefritis colapsante es una podocitopatía proliferativa, generalmente de pronóstico desfavorable para la función renal. Se presenta un caso en el que las dos condiciones aparecieron asociadas, lo cual es una forma infrecuente de presentación del linfoma hepatoesplénico de células T. Se discute, asimismo, el papel de los marcadores de desdiferenciación podocitaria en esta glomerulopatía, y se revisan la fisiopatología y el tratamiento.


The hemophagocytic syndrome is a serious clinical-histological entity secondary to different diseases. Collapsing glomerulonephritis is a proliferative podocytopathy that usually has an unfavorable renal prognosis. We present a case in which both entities were associated, which is an infrequent form of hepatosplenic T-cell lymphoma. In addition, we review the role of the markers of podocyte dedifferentiation in this glomerulopathy and its pathophysiology and treatment.


Subject(s)
Lymphohistiocytosis, Hemophagocytic , Glomerulonephritis , Antigens, Differentiation , Renal Insufficiency , Lymphoma , Lymphoproliferative Disorders
16.
Rev. colomb. cancerol ; 22(2): 76-83, abr.-jun. 2018. tab
Article in English | LILACS | ID: biblio-959886

ABSTRACT

Abstract Several autoimmune disorders have been associated with a variety of hematopoietic malignancies, particularly lympho-proliferative disorders. Multiple myeloma (MM) is one of the most common hematologic malignancies and has been described in the context of a variety of autoimmune conditions. Due to their diversity and rarity, the clinical features of autoimmune conditions associated with MM have not been elucidated and the pathogenesis remains unclear. In this report, we describe two cases of autoimmune conditions in the setting of MM and review the current literature.


Resumen Varios trastornos autoinmunes se han asociado a una variedad de neoplasias malignas hematopoyéticas, particularmente trastornos linfoproliferativos. El mieloma múltiple (MM) es una de las neoplasias malignas hematológicas más comunes y ha sido descrito en el contexto de una variedad de condiciones autoinmunes. Debido a su diversidad y rareza, las características clínicas de las condiciones autoinmunes asociadas con el MM no han sido aclaradas y la patogénesis sigue siendo poco clara. En este artículo se describen dos casos de condiciones autoinmunes en el marco del MM y se realiza una revisión de la literatura actual.


Subject(s)
Humans , Hematologic Neoplasms , Multiple Myeloma , Pathogenesis, Homeopathic , Literature , Lymphoproliferative Disorders , Myasthenia Gravis
17.
Journal of Experimental Hematology ; (6): 1811-1815, 2018.
Article in Chinese | WPRIM | ID: wpr-774381

ABSTRACT

OBJECTIVE@#To investigate the charactcristics of CD180 expression and differentiation diagnostic value in B cell chronic lymphoproliferative disorders (B-CLPD) through detecting the mean fluorescence intensity(MFI)of CD180 in different sub types of B-CLPD,using multiparameter flow cytometry (FCM).@*METHODS@#The CD180 MFI of malignant B cells in 178 patients with B-CLPD was detected by FCM. The level of CD180 MFI in various types of B-CLPD was compared to the normal control group. The level of CD180 MFI among sub-types of B-CLPD was also compared.@*RESULTS@#(1) The expression levels of CD180 in B-CLPD was significantly lower as compared with the normal controls,except the spleen difuse red pulp lymphoma (SDRPL); (2) The CD180 MFI in chronic lymphocytic leukemia sCLL) was significantly lower as compared with other B-CLPD cells; (3) CD180 ware significantly overexpressed in HCL compared with MCL,LPL,and MZL (P <0.05); (4) In the spleen-derived B-CLPD,such as SMZL,HCL, HCL variation and SDRPL,the expression of CD180 has significant difference between lymphomas with or without villous.@*CONCLUSION@#Utilizing the multiparameter flow cytometry for defecting expression of CD180 and other immunological markers can more efficiently distinguish the subtypes of B-CLPD.


Subject(s)
Antigens, CD , B-Lymphocytes , Biomarkers , Flow Cytometry , Humans , Immunophenotyping , Leukemia, Lymphocytic, Chronic, B-Cell , Lymphoproliferative Disorders
18.
Article in Korean | WPRIM | ID: wpr-717343

ABSTRACT

The outcome of solid organ and bone marrow transplantation has been dramatically improved with the development of immunosuppressive agent. However, the use of immunosuppressive agents could increase the risk of malignancies such as post-transplant lymphoproliferative disorder (PTLD). PTLD is regarded as the lymphoid malignancy of patients using immunosuppressive agents, and it could present diverse and non-specific symptoms. It involves various organs including the tonsil, adenoid, lymph node, and the brain. Because of its poor prognosis, an early suspicion of pathologic diagnosis is crucial for the treatment of PTLD. In this report, we demonstrate the case of three pediatric patients who had been treated for PTLD of various clinical presentations by early suspicion and pathologic diagnosis.


Subject(s)
Adenoids , Bone Marrow Transplantation , Brain , Diagnosis , Head , Humans , Immunosuppressive Agents , Lymph Nodes , Lymphoproliferative Disorders , Neck , Palatine Tonsil , Prognosis
19.
Article in English | WPRIM | ID: wpr-714802

ABSTRACT

Lymphoproliferative disorder in a posttransplant setting has emerged as a difficult problem in kidney transplantation (KT). Lymphoma involving adnexa of the eye has rarely been reported due to scarcity of lymphoreticular tissue in the ocular area. This report presents a case of a 37-year-old KT recipient who was diagnosed with conjunctival mucosa-associated lymphoid tissue lymphoma with a chief complaint of seeing black spots. Unlike other post-transplant lymphoproliferative diseases associated with the Epstein-Barr virus (EBV) reactivation via immunosuppression, the lesion was not related to the virus. The patient received radiotherapy with concomitant conversion from the tacrolimus to the sirolimus. Overall, the results presented herein indicate lymphoma may be an important differential diagnosis when KT recipients complain of ocular discomfort.


Subject(s)
Adult , Diagnosis, Differential , Herpesvirus 4, Human , Humans , Immunosuppression , Kidney Transplantation , Kidney , Lymphoid Tissue , Lymphoma , Lymphoma, B-Cell, Marginal Zone , Lymphoproliferative Disorders , Radiotherapy , Sirolimus , Tacrolimus , Transplant Recipients
20.
Gastroenterol. latinoam ; 29(supl.1): S21-S23, 2018.
Article in Spanish | LILACS | ID: biblio-1117633

ABSTRACT

The gastrointestinal lymphoid system plays a relevant role. The daily and continuous interaction between gastrointestinal lymphocytes with food and intestinal microbes requires precise functioning. The pathologic spectrum of lymphocyte malfunction results in lymphomas. MALT lymphoma is the most frequently diagnosed lymphoma, but there are other lymphoproliferative diseases such as diffuse large B cell lymphoma, mantle cell lymphoma and T associated lymphoma. The gastroenterologist and the endoscopist need to know these diseases in detail to achieve early diagnosis and treatment.


El sistema linfoide de defensa abdominal tiene un relevante rol en el buen funcionamiento sistémico. La interacción diaria y continua con patógenos alimentarios y microbios comensales intestinales precisa un estrecho funcionamiento. Las alteraciones linfoides clonales favorecen el desarrollo de linfomas de diversos tipos. Si bien, el linfoma asociado a tejido linfoide de mucosas (MALT) es el más conocido en contexto de su asociación con Helicobacter pylori, el tracto gastrointestinal se puede ver afectado por otros linfomas como el linfoma difuso de células grandes B y linfomas indolentes como el linfoma folicular, el linfoma del manto y el linfoma T asociado a enteropatía. El gastroenterólogo y endoscopista precisan conocer en detalle estas entidades para un oportuno diagnóstico y adecuado tratamiento.


Subject(s)
Humans , Gastrointestinal Diseases/diagnosis , Gastrointestinal Diseases/therapy , Lymphoproliferative Disorders/diagnosis , Lymphoproliferative Disorders/therapy , Helicobacter pylori , Lymphoma, Large B-Cell, Diffuse/diagnosis , Lymphoma, Large B-Cell, Diffuse/therapy , Lymphoma, B-Cell, Marginal Zone/diagnosis , Lymphoma, B-Cell, Marginal Zone/therapy , Lymphoma, Mantle-Cell/therapy , Enteropathy-Associated T-Cell Lymphoma/diagnosis , Enteropathy-Associated T-Cell Lymphoma/therapy
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